Who doesn't love this song? When I was in senior year we were watching a movie in my Calc. class and there was a quieter part. We could hear the class next to us watching a movie or listening to music and we realized they were listening to this song and we all started singing it. It was so cool! For four minutes I thought I was in High School Musical!
And while I was searching for a good video I found this video below which, I thought, is also worth showing because it's fuckin' awesome!