[youtube=http://www.youtube.com/watch?v=5EnsjrDsVyI&feature=player_embedded]
Actor John Krasinski may have some of the funniest lines on The Office, but he showed he can be hilarious without saying a word in a lip sync battle with Jimmy Fallon Tuesday night. The two grooved to RUN-D.M.C., Katy Perry and Melissa Manchester, then ended with an impassioned rendition of Boyz II Men’s “I’ll Make Love To You.”