You knew it was coming. And I know you want to watch it - don't lie. Disney has debuted the first trailer for High School Musical 3: Starring: Zac Efron, Vanessa Hudgens, Ashley Tisdale, Lucas Grabeel, Corbin Bleu, Monique Coleman, Matt Prokop, Justin Martin, Jemma McKenzie-Brown, Olesya Rulin Genre: Musical Senior Year, which will actually be arriving in theaters (and not just on TV) this fall. I was reluctant to post this, but I know there those of you out there who have a weakness for High School Musical as your guilty pleasure. Alas, that's not a good thing to admit (and I'm not one of them - never even seen the first two), but if you care to start your morning off with some energetic song and dance, then you're more than welcome to watch this trailer. Otherwise, I'd suggest you stay far away - you might throw your computer out the window by the end. Enjoy... if you can! Watch the first trailer for High School Musical 3: Senior Year: High School Musical 3: Senior Year is...