Last night, John Krasinski hit the Late Night stage to promote the final two episodes of The Office, and while he was there he took part in an epic lip-sync battle with Jimmy Fallon.
The two took turns miming the likes of Boys II Men, Katy Perry and Run-D.M.C., and Fallon goes ham on 1984 Star Search champion Sam Harris’ rendition of “Somewhere Over The Rainbow.” Faces are pulled. Jackets are removed. A good time is had by all—including a few members of The Roots, who seemed to be having trouble containing their laughter. Check it out below.