There's a new movie, Juno. Haven't seen it.
But the director Jason Reitman (son of Ghostbusters director Ivan Reitman) also directed a movie I saw on cable recently that has become one of my enjoyable-to-watch-again movies.
Only a few critics enjoyed it, but I thought "My Super Ex-Girlfriend" was humorous with likable characters. I totally believed Uma Thurman as an overworked superhero.
These are movies I've seen more than once and will watch again:
ferris bueller's day off
it's a wonderful life
much ado about nothing
as good as it gets