The problem with Nick and Norah is that I never came to believe they would end up together. Both are lovable enough to engage in a interesting conversation with, But neither seem to look outside themselves. Although Nick seems a bit attached to something other than himself, Norah seems to just be looking for that elusive orgasm. Both seemed to be looking for that certain someone for their next lay and not a life partner. Granted, their teenagers, but certain subjects like love should not end up being trivialized. Even teenagers should long for something real and not be such materialists.
I did like Nick and Norah's Infinite Playlist, as it hits on the same hipness as Juno does. Whereas Juno had to deal with a much serious matter, Adoption, Nick and Norah never seem to get beyond their own shallowness. If I were to write a sequel to the movie, it would be Nick pining over his breakup with Norah, while Norah beds the wrong guy again. Neither character developed enough to not repeat their past problems. But, whatever. Their teenagers, right?