I saw I Love You, Man last week and I loved it, man. Well, liked it anyway. It's not high art, but it's cute and funny. Paul Rudd and Jason Segal were both good.
I liked how it subtly, tacitly, subverted some gay stereotypes. Paul Rudd's character, a straight guy, gets along well only with women. He comes home and makes a big tray of root beer floats for his fiancée and her friends -- complete with chocolate straws -- but he's awkward around guys. His brother, Andy Samberg, is gay, but he is closer to their traditional dad and gets along much better with guys in general, including straight men.
Unfortunately the women characters, as usual in this kind of movie, were fairly dull. Even those who were potentially funny didn't get much to do. Maybe someday they'll start making comedies in which women get to say funny things, too.