We really enjoyed August Rush - both my kids really loved all the music in it. They are both dance-crazy, however.

A beautiful short animated one is 'The Snowman', you might find it second hand. It is based on the word-free book of the same name. The animation really works with the silent story and the only words added are in a very ethereal song towards the end so it has a really dreamy but very fun winter wonderland feeling.
(of course, it is a dream, so that just figures!)

Happy Holidays!