I'm still working on my top 5, but here's a prototype:
1. Pride & Prejudice (2005) - Donald Sutherland is too modern and he's self conscious about it.
2. Sense and Sensibility (1995) - I am ambivalent regarding Hugh Grant's Edward, but mercifully he's MIA through most of the movie.
3. It's a Wonderful Life - "crickets"
4. West Side Story - During the "Quintet" song it is very apparent that the Sharks are much better dancers than singers.
5. Fiddler on the Roof - At the beginning, Tevye contradicts himself. "Every one of us is a fiddler on the roof; trying to scratch out a pleasant, simple tune without breaking his neck." Then at the end of the song he says, "Without our traditions, our lives would be as shaky as... As a fiddler on the roof! (Well, are they or aren't they?)