A look at the best of Jimmy Fallon and Justin Timberlake in anticipation of their upcoming appearances on 'Saturday Night Live'

Jimmy Fallon is set to host Saturday Night Live on Dec. 21 with musical guest Justin Timberlake. This could be one of the most epic pairings for the show because the two have a rich and hysterical history together, both on SNL and on Late Night with Jimmy Fallon. Not to mention Fallon is a SNL alum, and Timberlake is famous for his digital shorts with The Lonely Island.

This is your classic bromance, but with a lot more ridiculous antics and giggling. It's fair to assume that Timberlake will appear more than just on stage as the musical guest. In anticipation for what will surely be a glorious Christmas episode, let's take a look at some of the most memorable moments between Fallon and Timberlake, both on SNL and Late Night:

On Late Night, it was revealed that Timberlake and Fallon have some fond memories from when they both went to Camp Winnipesaukee and would sing together in their cabin, much to the chagrin of the camp counselor.

Just recently, the two put together a bit to highlight the annoying nature of over-zelous hashtaggers.

Both incredible dancers, well mostly Timberlake, they put together a collection of new options for end zone dancing at football games. Joseph Fauria from the Detroit Lions actually took one of these moves after seeing the show and did it during a game.

Now this classic recurring bit, The Barry Gibb Talk Show, goes back to when Fallon was a cast member on SNL, and it became quite the hit. (This one has got to show up on this Saturday's show).

This next one had some accompaniment for the performance because they performed as a barbershop quartet called The Ragtime Gals. They do a compelling version of Timberlake's "SexyBack."

Fallon can actually rap, little known fact until he started "History of Rap" with Timberlake, and this was their third time doing it. It's quite impressive.

Clearly, the two know how to make magic together, and we have that to look forward to this Saturday (Dec. 21). Here's the promo Fallon made with the help of cast members Kenan Thompson and Kate McKinnon for the upcoming show.