From comic book (http://en.wikipedia.org/wiki/Scott_Pilgrim) to film.
Yes, it stars Michael Cera. Yes, he’s in a band and yes, he plays bass. And fights like Bruce Lee, with a vengeance. All in just-dark-enough, teenage fun replete with obscure musical references. Check it out!
PS: it’s also got Jason Schwartzman in it.
PPS: half the soundtrack was written by Beck. Hansen. Yes, the guy who sings “Loser”.