Justin Timberlake's been the musical guest on Late Night with Jimmy Fallon all week to promote his much anticipated album, The 20/20 Experience, out officially March 19. Not only has he been sharing songs from the album, but because he's JT and he's the best, he's also been popping up in a few hilarious skits during the week. JT for Pope!

Last night, both Jimmy Fallon and Justin Timberlake busted out their best Michael McDonald impression... right next to Michael McDonald himself. The trio sang a R&B-tinged rendition of "Row, Row, Row Your Boat," and we're not doing it any justice in this paragraph. Just watch it.

Below, Timberlake shows up in a skit with Steve Carrell and Jimmy Fallon. JT uses mannequin arms instead of his real ones and pokes fun at his NSYNC days. Justin, be my (married) boyfriend.