Here's a totally sweet animated short created by Adult Swim that covers a portion of the Scott Pilgrim series not included in the movie. It's great prep on opening night!
http://i.adultswim.com/adultswim/video2/tools/swf/viralplayer.swf
http://i.adultswim.com/adultswim/video2/tools/swf/viralplayer.swf