the tonight show

Jimmy Kimmel and his wife welcomed their son, William "Billy" Kimmel, into the world, and all appeared well — until about three hours later.

Demi Lovato made out with a pillow featuring Ed Sheeran's face on 'The Tonight Show' during an 'Ew!' sketch with Jimmy Fallon.

Katie Francis of Oklahoma City has set the record for most Girl Scout cookies sold. The record-setting box was sold to 'The Tonight Show' host Jimmy Fallon.

Watch Alessia Cara's spot-on impressions of Lorde, Nicki Minaj and Ariana Grande on 'The Tonight Show Starring Jimmy Fallon.'

Millie Bobby Brown kills Nicki's verse from the Kanye West song 'Monster' on The Tonight Show

Weebles may not fall over, but in May, Trainor went DOWN.

While playing a voice-altering karaoke game on 'The Tonight Show,' Amy Adams proved she can "Work" like RiRi.

'Hotline Bling' in the style of 'Positively 4th Street' is something you have to hear

"I have been waiting my whole life to do this," the singer said — not of performing a song, but playing a ridiculous game with Jimmy Fallon.

Lionel Richie asked, 'Hello? Is it me you're looking for?' Jimmy Fallon answered.

The 'Mission: Impossible 5' actor gave the task his typical 110%.

If you're going to have only one Facebook friend, it might as well be Facebook creator Mark Zuckerberg. While it's unclear how many stars have Facebook profiles lovingly crafted by the Zuck himself, Andy Samberg has one, and he shared the story of its creation on last night's 'The Tonight Show' with a gobsmacked Jimmy Fallon. We're jealous.