Krasinski promotes series finale of “The Office,” will make you smile

May 9, 2013 17:01 GMT  ·  By

Hit series “The Office” ends on May 16 and actor John Krasinski is promoting in with an appearance on the super funny Jimmy Fallon. In case you’re wondering which of the two fake-sings best, the video above will provide you with an answer.

Or so I hope, because I personally can’t decide.

Fallon called the “contest” the big lip-sync off, in that it had the both of them fake-singing to 3 popular songs each, of their own choosing.

There was rapping, there was some pop, some classics and there were powerful ballads as well. More importantly, there was a lot of laughter.

At one point, as Krasinski was fake-singing Katy Perry’s “Teenage Dream,” Fallon couldn’t stop giggling.

Even if you can’t pick a favorite from the video, at least you will smile. I promise.