Justin Timberlake and Jimmy Fallon have always been a winning comedy and musical team.

The singer and the late night TV host put together numerous memorable skits, like their take on Bee Gees Barry and Robin Gibb on for the Barry Gibb Talk Show on Saturday Night Live through their most recent collaboration pointing out how silly hashtags on Twitter can be.

Following a week guesting on the show in March, dubbed "Timberweek", Justin joined Jimmy once again through the month of September, collaborating on more instant classics, like "Young Jimmy Fallon & Justin Timberlake Sing At Camp Winnipesaukee", belting out 90s Hootie and the Blowfish hit "I Only Wanna Be With You"; and going through the "Evolution of End Zone Dancing".

Justin joined his pal to promote his new album, "The 20/20 Experience 2 of 2" along with his new film, Runner Runner, about offshore gambling. Timberlake stars alongside Ben Affleck and Gemma Arterton. The film opens October 4.

Check out the hilarious clips from Timberlake Tuesdays...