Watch Justin Timberlake's Hilarious Moments From "Timberweek"

Justin Timberlake reunited with his late-night BFF, Jimmy Fallon, for five nights of music and comic mayhem in "Timberweek." Following his fifth return to Saturday Night Live, Timberlake appeared on Late Night With Jimmy Fallon for a week-long stint

Whether he's donning geeky braces in a summer camp skit or crooning the latest single from his highly-anticipated album, Timberlake is definitely a crowd-pleaser

The singer brought sexy back yet again with a barbershop quartet rendition of his 2006 hit. Dressed in less-than-charming multi-colored suits, Timberlake and the "Ragtime Gals" gave us a version that might just be better than the original