Nick and Norah’s Infinite Playlist: Peter Sollett’s teenage romantic comedy takes place mostly in one night of mild adventures; that tight focus comes with advantages (no wasted time with superfluous tangents and characters) and disadvantages (little space for a more rounded look at the protagonists). The result, nevertheless, is charming but superficial. The charm comes from its central pair, Kat Dennings and Michael Cera; the characters share a certain degree of functioning awkwardness and their love for (a certain type of) music, and they are nice together. The supporting cast is likewise efficient, even if their roles are particularly one-dimensional. Adding to the charm is a bohemian New York City after dark, showing its less stressful side. The film is simple and efficient with its looks; the soundtrack has a good number of nice songs (but not quite enough to qualify as an infinite playlist).