Check out this hilarious montage of goofs and gaffes, courtesy of the HIGH SCHOOL MUSICAL 3: SENIOR YEAR cast! Disneys High School Musical phenomenon leaps onto the big screen in HIGH SCHOOL MUSICAL 3: SENIOR YEAR, in which Americas favorite high school students (ZAC EFRON, VANESSA HUDGENS, ASHLEY TISDALE, LUCAS GRABEEL, CORBIN BLEU and MONIQUE COLEMAN) hit senior year. Amidst a basketball championship, prom and a big spring musical featuring all of the Wildcats, Troy and Gabriella vow to make every moment last as their lifelong college dreams put the future of their relationship in question. A crew of sophomore Wildcats (MATT PROKOP, JUSTIN MARTIN, JEMMA MCKENZIE-BROWN) joins in the fun as the films incredible new music and exciting dance numbers take maximum advantage of the big screen. HIGH SCHOOL MUSICAL 3: SENIOR YEAR opens today, Friday, October 24, 2008!