Just thought I'd copy this (by jocye023) here to keep it alive, though many of these IMDb threads may be dead. Foxinator, now in his 25th incarnation, seems determined swamp it in imitations:
BACKGROUND]
There have been many good threads discussing Brokeback Mountain from different perspectives, and they are buried in the pages. So I tried to summarize them to be an index. Actually many good ones have gone either because of abuse report or simply out of date.
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SCENES / DIALOGUE
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Classical Allusions -- BBM, Vergil, Aeneas, and Ennis
http://www.imdb.com/title/tt0388795/board/flat/40163712 Deleted Scenes and Answer to Where they Spent the Night in Signal
http://www.imdb.com/title/tt0388795/board/flat/36928789 Water Walking Jesus ------ 'Christ in Our Home'
http://www.imdb.com/title/tt0388795/board/flat/39734115 Jack and the Wind (Spoiler-ish)
http://www.imdb.com/title/tt0388795/board/flat/37172096 BBM Analysis: Ang Lee's Camera
http://www.imdb.com/title/tt0388795/board/flat/40203666 Garden of Eden symbolism
http://www.imdb.com/title/tt0388795/board/flat/34425170 Gustavo Santaolalla's score v.s Jack and Ennis
http://www.imdb.com/title/tt0388795/board/flat/37413367 O that blue, blue shirt of yours (classical Chinese references in BBM)
http://www.imdb.com/title/tt0388795/board/reply/37185570 Brokeback and the Number Three
http://www.imdb.com/title/tt0388795/board/flat/40229458 On Brokeback Mountain
Ennis Breakthrough (SPOILER-ISH)
http://www.imdb.com/title/tt0388795/board/flat/37090890 Ennis attracted to Jack the moment they met?
http://www.imdb.com/title/tt0388795/board/flat/33378449 Why wasn't Jack really looking, while Ennis was naked and bathing?
http://www.imdb.com/title/tt0388795/board/flat/38787678 Ennis fell in love before Jack did
http://www.imdb.com/title/tt0388795/board/flat/33823131 What I gleaned from the religion discussion (spoilers)
http://www.imdb.com/title/tt0388795/board/flat/36339781 ' I ain't yet had the opportunity'

?
http://www.imdb.com/title/tt0388795/board/flat/38541554 Jack and Ennis's Relgious Talk
http://www.imdb.com/title/tt0388795/board/flat/36339781 That first tent scene
http://www.imdb.com/title/tt0388795/board/flat/34782336 I HATED the first sex scene!!
http://www.imdb.com/title/tt0388795/board/flat/34699195 Ennis and Jack first sex scene
http://www.imdb.com/title/tt0388795/board/flat/37257949 How did Ennis know what to do? - the original
http://www.imdb.com/title/tt0388795/board/flat/30098332 Why do you think Ennis went into the tent in the second tent scene?
http://www.imdb.com/title/tt0388795/board/flat/36774060 About the 'Sorry, It's all right, it's all right' thingie...
http://www.imdb.com/title/tt0388795/board/flat/34700589 Why was Jack washing his clothes naked?
http://www.imdb.com/title/tt0388795/board/flat/36333040 Scene where Joe Aguirre watches Jack and Ennis wrestle
http://www.imdb.com/title/tt0388795/board/flat/38476821 Why the fighting before leaving Brokeback ?? (Spoiler)
http://www.imdb.com/title/tt0388795/board/nest/37060430 Separate Lives
The Choice of 'Surf Party' as the Clip at the Drive-In
http://www.imdb.com/title/tt0388795/board/flat/37451771 Supermarket Scene
http://www.imdb.com/title/tt0388795/board/flat/38409904 Fireworks scene
http://www.imdb.com/title/tt0388795/board/flat/35583310 Question about the first bar scene with Jack and the clown
http://www.imdb.com/title/tt0388795/board/flat/37186039 Jack and the clown exchange the looks of recognition
http://www.imdb.com/title/tt0388795/board/flat/38493737 About Jack Out On The Back Road All Alone... Hmmmmm....
http://www.imdb.com/title/tt0388795/board/flat/34694697 Ennis's thwarted suicide attempt?
http://www.imdb.com/title/tt0388795/board/nest/34624542 Hidden Meaning in 'Husbands don't never wanna dance with their wives
http://www.imdb.com/title/tt0388795/board/flat/36963842 Reunion kiss: What does Ennis say to Jack?
http://www.imdb.com/title/tt0388795/board/flat/39157483 Reunion scene - an ode to the nuzzle
http://www.imdb.com/title/tt0388795/board/flat/35191778 The Motel Scene
http://www.imdb.com/title/tt0388795/board/flat/33634354 This is my house, My child, Your my guest.
http://www.imdb.com/title/tt0388795/board/flat/40134938 Why does Ennis feel the need to start fights with other people?
http://www.imdb.com/title/tt0388795/board/flat/36572328 Lake Scene
Jack and Ennis - Lake Scene and a Unique Camera Move
http://www.imdb.com/title/tt0388795/board/flat/32762368 What did Ennis mean...'if I should come to know them'
http://www.imdb.com/title/tt0388795/board/flat/34511518 I did once.
http://www.imdb.com/title/tt0388795/board/flat/35219370 Was Jack waiting for Ennis to say...
http://www.imdb.com/title/tt0388795/board/flat/35214766 Exact dialogue of 'I'm no one, nowhere' scene.
http://www.imdb.com/title/tt0388795/board/flat/37282122 the lake scene is embarrassing
http://www.imdb.com/title/tt0388795/board/flat/38235577 Timing of the Flashback
http://www.imdb.com/title/tt0388795/board/flat/39899175 Ending
Ennis's phone call to Lureen-'about the ashes, I mean'
http://www.imdb.com/title/tt0388795/board/flat/37553572 Why Ennis knew Lareen was lying on the phone
http://www.imdb.com/title/tt0388795/board/flat/35899115 Pondering the Phone Call to Lureen *Spoilers*
http://www.imdb.com/title/tt0388795/board/flat/34212185 If you think Lurren was lying.....why?
http://www.imdb.com/title/tt0388795/board/flat/39891519 The Lightning Flat scene (SPOILERS)
http://www.imdb.com/title/tt0388795/board/flat/35429142 Jack's Mother and the shirts
http://www.imdb.com/title/tt0388795/board/flat/34068936 The LOST Scene - Still No End to the Endless Debate SPOILERS
http://www.imdb.com/title/tt0388795/board/flat/36052177 John Twist angrier when he saw Ennis coming down with the Shirts
http://www.imdb.com/title/tt0388795/board/flat/38302872 The key to the entire movie is in the end trailer scene: Alma Jr.
http://www.imdb.com/title/tt0388795/board/flat/40489743 the number 17 on Ennis' mailbox
http://www.imdb.com/title/tt0388795/board/flat/40598807 Constantly Misinterpreted Ending (MAJOR SPOILERS)
http://www.imdb.com/title/tt0388795/board/flat/34369258 'Jack, I swear.....'
http://www.imdb.com/title/tt0388795/board/flat/35361625 Still grappling with the ending (spoiler)
http://www.imdb.com/title/tt0388795/board/flat/33300141 JACK, I SWEAR means: I'll always love you. (SPOILER)
http://www.imdb.com/title/tt0388795/board/flat/35087927 Jack I Swear...
http://www.imdb.com/title/tt0388795/board/flat/37059798 Why and What if….
What if it hadn't been Ennis' weekend to see his girls?
http://www.imdb.com/title/tt0388795/board/flat/37434888 Why 'I Love You' never mentioned in the film?
http://www.imdb.com/title/tt0388795/board/flat/34976063 Ennis in Mexico.....
http://www.imdb.com/title/tt0388795/board/flat/40064454 --------------------------------------------------------------------------------
ABOUT CHARACTERS
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Why Jack quit Ennis
http://www.imdb.com/title/tt0388795/board/flat/40653068 Jack never telling Ennis about the shirts
http://www.imdb.com/title/tt0388795/board/flat/39808031 Jack was maligned unfairly =spoiler=
http://www.imdb.com/title/tt0388795/board/flat/39163170 Ennis' Love is more Pure
http://www.imdb.com/title/tt0388795/board/flat/33830752 Jack Being 'Unfaithful' (Give me a break!)
http://www.imdb.com/title/tt0388795/board/flat/34260887 I just don't get the sympathy for Ennis and Jack?
http://www.imdb.com/title/tt0388795/board/flat/34048952 Is Ennis Actually Gay?
http://www.imdb.com/title/tt0388795/board/flat/34222257 Ennis was right... he 'ain't no queer'
http://www.imdb.com/title/tt0388795/board/flat/35351599 Did Ennis encourage Jack?
http://www.imdb.com/title/tt0388795/board/flat/34950855 Ennis's Maledictions – SPOILERS
http://www.imdb.com/title/tt0388795/board/flat/35009762 Jack Quit on Ennis? (SPOILERS)
http://www.imdb.com/title/tt0388795/board/flat/38162748 Cowboy's Lament - Ennis Happily Humming
http://www.imdb.com/title/tt0388795/board/flat/34804365 Jack Twist: The Black Sheep
http://www.imdb.com/title/tt0388795/board/flat/35439282 Jack's dangerous side...
http://www.imdb.com/title/tt0388795/board/flat/35866047 'We was good friends.' (OK, a spoiler)
http://www.imdb.com/title/tt0388795/board/flat/34123597 'Huh' and 'Hmmm'... The Complete Ennis del Mar Catalogue
http://www.imdb.com/title/tt0388795/board/flat/35265246 How Long Will Ennis Live, D'You Think?
http://www.imdb.com/title/tt0388795/board/flat/35381860 Ennis's poverty
http://www.imdb.com/title/tt0388795/board/flat/38343307 Did Ennis Want to End Relationship with Jack
http://www.imdb.com/title/tt0388795/board/flat/38239825 Ennis and his horses
http://www.imdb.com/title/tt0388795/board/flat/39149005 Jack's Sad Life
http://www.imdb.com/title/tt0388795/board/flat/38694279 Ennis' Memories...
http://www.imdb.com/title/tt0388795/board/flat/39929013 Contemplating Jack's fate
http://www.imdb.com/title/tt0388795/board/flat/39197616 Anyone else think Alma, Jr. has her Daddy all figured out?
http://www.imdb.com/title/tt0388795/board/flat/32685457 Did Ennis really never love Alma??
http://www.imdb.com/title/tt0388795/board/flat/35336816 Why Doesn't Anyone Feel Bad For Alma?
http://www.imdb.com/title/tt0388795/board/flat/37899104 What purpose does CASSIE serve?
http://www.imdb.com/title/tt0388795/board/flat/34874200 Is it true that girls don't fall in love with fun?
http://www.imdb.com/title/tt0388795/board/flat/34920117 What's with Lureen's sexuality anyway?
http://www.imdb.com/title/tt0388795/board/flat/37160842 WHERE exactly is Lureen's great love for Jack? SPOILERS
http://www.imdb.com/title/tt0388795/board/flat/37252814 Intrusive thoughts about Jack and Randall **SPOILERS**
http://www.imdb.com/title/tt0388795/board/flat/36040375 Ennis would have hated to learn about Randall
http://www.imdb.com/title/tt0388795/board/flat/35998998 Who Here Thinks That Randall Would've Made A Better Boyfriend For Jack?
http://www.imdb.com/title/tt0388795/board/flat/39758242 The Only Christian in the Movie
http://www.imdb.com/title/tt0388795/board/flat/36713392 --------------------------------------------------------------------------------
VIEWPOINTS / DEBATES
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I'm a Conservative Christian and This Film Changed My Mind
http://www.imdb.com/title/tt0388795/board/flat/37714135 To 'Christians' and 'Gays':
http://www.imdb.com/title/tt0388795/board/flat/34293998 Art Which Transcends Art (Per Request)
http://www.imdb.com/title/tt0388795/board/flat/35009826 Brokeback Mountain is a Movie for a Generation
http://www.imdb.com/title/tt0388795/board/flat/35371080 A Christian with a Brain speaks about this film
http://www.imdb.com/title/tt0388795/board/flat/34238312 The ONLY False Moment In The Film
http://www.imdb.com/title/tt0388795/board/flat/34236916 My Take - a teenager's thoughts (serious review)
http://www.imdb.com/title/tt0388795/board/flat/35495431 Saw it yesterday and have many regrets...
http://www.imdb.com/title/tt0388795/board/flat/31720312 A Must Read Review about BBM by a Senior Citizen
http://www.imdb.com/title/tt0388795/board/flat/38111164 --------------------------------------------------------------------------------
THE MOMENTS
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An ode to.. the FLASHBACK SCENE!
http://www.imdb.com/title/tt0388795/board/flat/39682103 Scenes that make you go warm and fuzzy
http://www.imdb.com/title/tt0388795/board/flat/37132000 Most painful scene to watch.....
http://www.imdb.com/title/tt0388795/board/flat/36437814 Notice anything so subtle in the film???I did...scene spoilers
http://www.imdb.com/title/tt0388795/board/flat/36287482 Two Moments Rarely Mentioned
http://www.imdb.com/title/tt0388795/board/flat/36963243 Favorite scene
http://www.imdb.com/title/tt0388795/board/flat/33869043 Favourite Line?
http://www.imdb.com/title/tt0388795/board/flat/34783303 Jake's best acting moments?
http://www.imdb.com/title/tt0388795/board/flat/35187542 Heath's best scene.
http://www.imdb.com/title/tt0388795/board/flat/37098166 What nuance of Cowboy Etiquette did YOU first learn from this movie?
http://www.imdb.com/title/tt0388795/board/flat/34578507 Ennis smiling
http://www.imdb.com/title/tt0388795/board/flat/40220844 Memorable lines from the book
http://www.imdb.com/title/tt0388795/board/flat/39532062 THE TIME FOR US
Lines you won't hear in BBM
http://www.imdb.com/title/tt0388795/board/flat/41090535 My Parents and BBM
http://www.imdb.com/title/tt0388795/board/flat/40675389 Ten things that make Brokeback Mountain great
http://www.imdb.com/title/tt0388795/board/flat/39800956 YOU KNOW YOUR A BROKEBACK MOUNTAIN FAN WHEN...
http://www.imdb.com/title/tt0388795/board/flat/33854838 I Wish I Knew How To Quit This Message Board
http://www.imdb.com/title/tt0388795/board/flat/34515647 When does the devastation pass?
http://www.imdb.com/title/tt0388795/board/flat/34424347 Describe BBM In One Word............
http://www.imdb.com/title/tt0388795/board/flat/33912886 Where are fans from?
http://www.imdb.com/title/tt0388795/board/flat/35300591 (New?) OBSERVATIONS and favorite SCENES after 4th viewing
http://www.imdb.com/title/tt0388795/board/flat/36986034 Second Viewing (a few new questions)
http://www.imdb.com/title/tt0388795/board/flat/34840036 Have seen it 3 times now -- Questions, anyone?
http://www.imdb.com/title/tt0388795/board/flat/30593822 Humor: The Jack f'n Twist appreciation thread
http://www.imdb.com/title/tt0388795/board/flat/34437759 Are they going to make a sequel?
http://www.imdb.com/title/tt0388795/board/flat/40352084 Resources
The 'Brokeback Canon': Essential Resources for the movie
http://www.imdb.com/title/tt0388795/board/flat/36216714 The Brokeback List of Links.
http://www.imdb.com/title/tt0388795/board/flat/35721884