Cee Lo Green's "Forget You" is easily one of the biggest songs of 2010, and we were equally enchanted with Gwyneth Paltrow's Glee version. Tonight, the two joined forces at the Grammys to perform the number, joined by a ton of Muppets singing backup. Watch their fun, colorful performance and tell us what you think!
Justin Bieber kicked off his Grammy performance on a nostalgic note, with a look at the first time Bieber sang "You Got it Bad" for Usher back in 2007. Fast forward four years later, and the boy who became a teen phenomenon took the stage to strum an acoustic version of "Baby" on his guitar. It only grew from there, as Usher joined in the fun for "O.M.G." We loved seeing these guys show off their moves side by side, but what did you think of the performance?
