Buzz Bites (12/7/10): Katy Perry And 'Glee''s Darren Criss Perform 'Teenage Dream'

(Credit: Michael Buckner/Getty Images)

+ Katy Perry and "Glee"'s Darren Criss re-created Criss' popular a cappella version of "Teenage Dream" at the Trevor Live benefit in Hollywood last night. (Idolator)

+ Carrie Underwood took home Artist of the Year at last night's inaugural American Country Awards. (MTV News)

+ Justin Timberlake suffered a leg injury on the set of his new film, "Now," causing filming to halt. (PopEater)

+ The backup dancer on the alleged receiving end of a Demi Lovato punch wants an apology from the Disney star. (TheFABlife)

+ Janet Jackson is taking a more casual approach with her new album. (That Grape Juice)