I thoroughly enjoyed this movie. It's different than anything else in theaters and a rockin' good time. In terms of a comic adaptation, it's fairly faithful in terms of transferring the main elements of six comic volumes into one epic big-screen adventure. Visually, it's the next evolutionary step from the Adam West Batman series, and Scott Pilgrim proves that sound effects on screen don't have to be hokey.
All of that said, it's not for everyone. If you grew up loving video games, comic books, and good music, then this is for you; anyone else may want to avoid it.