So I finally saw Avengers last Friday and when I came home I started looking for fic (I googled Thor/Bruce Banner but in these kind of macho universes only the villains are really interesting. So yeah, Loki).
I found The Hapless Queer Avengers series, and seriously, this stuff is awesome. Everybody is gay, it's funny, and there's some plot too!
(here was a dead link to fanart by Deviant user princessofawkward)