Good Will Hunting (1997)
The movie "Miss Misery" was written for also features a bunch of other Smith songs.
Thumbsucker (2005)
True to its title, this movie is about a kid who sucks his thumb. There's a little more to the story, of course, and also some Elliott Smith on the soundtrack with one original song and covers of Cat Stevens and Big Star.
American Beauty (1999)
This Oscar Best Picture-winner ends with an eerie Elliott Smith cover of the Beatles' "Because" over the credits.
Guitar Hero 5 (2009)
The fifth incarnation of the popular video game features Smith's song "L.A."