While Late Night With Jimmy Fallon is a post-midnight haven for televised hijinks most evenings, guest John Krasinski took the show’s tomfoolery to a whole new level last night with a lip-sync battle he suggested. The Office’s Jim went head to head with Fallon acting out dramatic ditties by everyone from Melissa Manchester to Das EFX. The highlight really comes when Krasinski takes on Boyz II Men’s “I’ll Make Love To You,” but his version of Katy Perry’s “Teenage Dream” is pretty great, too. [via Uproxx]