jimmy fallon

During the 'Celebrity Family Feud' skit of 'SNL' last night (Dec. 21), which featured CBS network stars versus NBC network faves, Jimmy Fallon played Jim Parsons from 'Big Bang Theory.' Musical guest Justin Timberlake, in turn, played Fallon to manic perfection.

Few guest performers seem to get 'SNL' quite like Justin Timberlake, who has a wonderful habit of showing up on the stage and creating classic sketches and characters with seemingly no effort. In most cases, he would easily overshadow the actual guest host, but when that guest host is show alum (and current late night superstar) Jimmy Fallon, there is less overshadowing and more comedic awesomenes

Justin Timberlake and his favorite late-night partner-in-crime, Jimmy Fallon, are back with yet another funny video, and the results are #TotallyHilarious.

It was no 'History of Rap,' but whenever you get Jimmy Fallon and Justin Timberlake together, you know it'll be great. And so it was on Tuesday night when JT made a surprise appearance during a Fallon sketch.

Jimmy and Justin are back at it again, this time it is the End Zone Dance. I love these two guys together.

We're still not quite sure if we're ready to laugh at 'Breaking Bad' when AMC moves forward on the 'Better Call Saul' spinoff, but fortunately Jimmy Fallon knows just how to strike the tone. Fallon's latest 'Late Night' parody sees the future 'Tonight Show' host "Joking Bad" with some incredible and surprising cameos, the best way to start your morning.

In an ongoing segment Jimmy Fallon is offering on his late night talk show, we've seen NBC Nightly News anchor Brian Williams rap along to Snoop Dogg's "Nothing But a G Thang" and Marky Mark's "Good Vibrations". Another installment is here, and it might be my favorite.

This is a whole lot of adorable in a tiny little space.  Jimmy Fallon takes his house band, the Roots, adds Robin Thicke and a few classroom instruments, and does one of the best performances of "Blurred Lines" I've seen.

In the same vein as that incredibly magical rendition of 'All I Want for Christmas Is You,' Jimmy Fallon, The Roots and a bunch of grade school instruments are once again making awesome music. This time it's a cover of Robin Thicke's nonstop hit 'Blurred Lines.'

News anchor Brian Williams hasn't slow-jammed the news with late night host Jimmy Fallon in a while, but that doesn't mean Fallon has forgotten about him. In fact, by combining Williams' random clips from 'NBC Nightly News,' Jimmy and his staff were able to make Brian rap without any effort on his part whatsoever.

With the dust from the purported "Late Night Wars" now settled, 'SNL' vet and 'Late Show' host Jimmy Fallon is set to take over 'The Tonight Show' from Jay Leno come spring 2014, but what changes to the franchise can fans expect? Apart from the major move from Los Angeles back to New York, what other modifications has Fallon made to 'The Tonight Show'?

Thanks to the magic of editing, anything is possible. Yes, even NBC anchor Brian Williams rapping the opening to Snoop Dogg's 'Nuthin' But a 'G' Thang' without his knowledge -- but with a healthy assist from Jimmy Fallon and his staff, who were able to make the clip come to life by piecing together key words from Williams' various reports. But it may not have even been necessary to go behind Brian