See, I don't understand this whole "They're unlikeable but it's part of the story maaaaan" bit. Not having the main character be someone I can stand has never been a good way of getting me to like a story. I mean, I can like horrible people in stories and all, both viliain and hero, but Scott Pilgrim and a vast majority of his friends do not sound like they would fit that criteria so I'm kinda with Jimmy really. As I said before, I think it's just quite simply that I'm not part of the rather specific market he's aimed at.
Still going to see and likely enjoy the movie.