I just finished watching it today and I have to say it is amazing. The acting couldn't be done any better. Beautiful scenery helps it set its happy and upbeat mood. And the dramatic scenes at the end have the perfect music to accompany it.
Though I have to say that my absolute favorite thing in the movie was the music. Every song was done great and easily gets stuck in your head. My favorite is Do-Re-Me. There is no dull or boring moments and Julie Andrews did a terrific job. Overall this movie is perfect for young and old alike. I highly recommend buying it.