Zac and friends bring their song-and-dance to the big screen.

Just how insanely popular are Disney's 'High School Musical' movies?

After the first two installments in the series aired on the Disney Channel, the third, 'Senior Year,' will get a theatrical release. That's an almost unheard-of practice in Hollywood.

Well, kiddies rejoice! The trailer for 'HSM 3' has just landed, and it's a colorful mix of singing, dancing and ... basketball, with its full exuberant cast in tact. Jeez that Zac Efron is dreamy. Watch the trailer, then check out our exclusive photos from the movie.

Get more 'High School Musical 3' trailers & clips