If you've read the comic, played the game, or seen the movie discuss it here. I've seen the movie and played the game, loved both of them and would recommend the movie to everyone. I'll probably read the comic soon.
Saw the movie last week. I enjoyed it but found it became way too repetitive towards the end. My favourite part, other than the universal logo at the beginning, was with Brandon Routh being killed with kryptonite by Tom Jane. Movie was entertaining, didn't make me want to read the comic. Besides, I'm not a fan of manga.
I am also not a fan of manga, but I found Scott Pilgrim to be... different. Plus if you read the comic you'll notice how the movie stays pretty consistent to the comic in the beginning (almost word for word) but near the end you are going, "wtf?!?!" Overall, it was a great movie.
thats cause the movie was being filmed before the comic was finished, so the endings are a bit different.