Throngs of screaming teenagers don't do it for Josh Groban.
- Josh Groban

Victor Garber and Josh Groban guest-starred on the latest episode of Glee, with the latter playing a hilarious, rude version of himself.

Also, Will started his own singing group, while Kurt revealed a major secret about himself to Mercedes. It was moving stuff.

Read a detailde recap of "Acafellas" now and let us know if you liked this week's installment.

Josh Groban didn't sing on Glee. But Mercedes busted out an incredible rendition of "Bust Your Windows" that you can buy off iTunes right now!

Our favorite Glee quotes from the hour included:

Sue: I'm going to ask you to smell your armpits. That's the smell of failure, and it's stinking up my office. | permalink

Rachel: We're gonna win because we're different. That what makes us special. | permalink

Kurt: You busted my window.
Mercedes: Well, you busted my heart. | permalink

Cougar: Is that a nipple ring?
Puck: Yeah. I'm pretty rock 'n roll. | permalink

Emma: The critics said Van Halen was dead when David Lee Roth quit. But the hit single "Right Now" proved them wrong. | permalink

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.