When you kick off your first week with U2 and end it with Justin Timberlake, cramming in Will Smith, Lady Gaga, Kim Kardashian, fake Harry Styles , the First Lady, a rapping Brian Williams and an ice skating Will Ferrell in between, you can take a day off and chill. But knowing Jimmy Fallon, he won't. It's safe to say that Fallon killed the game (and posted impressive ratings) during his first week as host of "The Tonight Show." With a star-packed roster of guests and surprise drop-ins (hello Martin Scorsese and Seth Rogen), not to mention a Friday night show that will re-unite him with his partner in comedic crime JT, the former "Late Night" host proved more than up to the job.
There were so many highlights, in fact, that instead of just naming them all, we decided to just show you what you might have missed:
U2's rooftop gig was amazing, but this week also brought us Lady Gaga, Arcade Fire, Jimmy and Will doing the "Evolution of Hip-Hop Dancing," the Ragtime Gals taking R. Kelly's "Ignition" to the barbershop and the unforgettable Brian Williams "Rapper's Delight" bit.
Lady Gaga's ARTPOP jam session.
U2 getting high on the roof of 30 Rock.
Brian Williams rapping the news.
Arcade Fire going gloomy disco for "Afterlife."
Will Ferrell and First Lady Michelle Obama's turn on the "Ew" sketch was a classic.
And Ferrell definitely brought the weird with his Olympic ice skating homage to "Downton Abbey."
The night that Kristen Wiig (kind of, but not really) pretended to be Harry Styles.
When Kim Kardashian, Mike Tyson, Lindsay Lohan, Mariah Carey, Robert DeNiro, Sarah Jessica Parker and Lady Gaga paid up on their bets.
And, of course, the Ragtime Gals singing R. Kelly's "Ignition (Remix)."
And did we mention that Justin Timberlake is the guest Friday night? So, you know, that will be awesome.