If you missed 17 Again star Zac Efron hosting SNL this past weekend, you must check out this clip of the skit, "High School Musical 4: New Senior Class." (And even if you caught the show, you probably want to watch it again -- hilarious, right?!)

And don't forget to enter to win 17 Again posters signed by Zac, Matthew Perry, Leslie Mann, and Thomas Lennon. (We've got 17, so your chances are good!)



Photo: Courtesy of NBC