Okay, I've never seen a gay porno movie! I'm guessing they're not on the shelf of the local Video Ezy store, so where do you find them? Are they only to be found at those 'special' stores with XXX flashing in the window? I feel as though I've led a sheltered life here... so sad.
Certainly, adult bookstores will sell/rent gay videos (at least those found in the larger cities), as will many magazine/entertainment outlets that also sell adult materials (not adult bookstores per se, but stores with adult sections). Many gay and lesbian bookstores will sell/rent gay porn (again, these would not be adult bookstores per se, but bookstores catering to gay and lesbian interests that have adult sections on the side). And while it's true you're not going to find anything like gay porn in your neighborhood Blockbuster, really good video outlets with a broad, eclectic selection will sometimes have an adult section (which sometimes includes gay product).
In addition to all this, the Internet has loads of pornography on it, with a fair share of it being gay in nature. Exercise caution if surfing the Net for adult material--many of the prompts and pop-ups are manipulative, and it's all too easy to click on something that you might find distasteful.
But the colorful world of gay porn awaits anyone out there who really wishes to experience it.