Loved this film so much! It was great seeing it on the big screen too!
I think "High School Musical" was my favourite song. I loved it at the end when the 6 cast members were all stood together. In numerous reports they've commented how emotional it was when they filmed the last scene, and I reckon they did film this part last - there seemed to be some genuine tears there!
Favourite songs overall:
HSM 1: Bop to the Top
HSM 2: You are the Music in Me
HSM 3: High School Musical
... But I love them all really. Except maybe Sharpay's brutal slaughtering of Music in Me in HSM 2. It's funny in the film, but when my iPod suddenly plays "FIVE SIX SEVEN EIGHT NA NA NA NA, NA NA NA NA" it's a bit embarassing.