Alex Rodriguez stopped by "The Tonight Show," where Jimmy Fallon thought it'd be fun to pit the former New York Yankee against his greatest competition yet. A one-year-old.
Camila Cabello dropped by the "Tonight Show Starring Jimmy Fallon" music room, where she joined the host and the Roots for a classroom-instruments cover of her hit song, "Havana."
Hugh Grant used to play rugby at Oxford, and when he went back for a visit the team had him do a drinking thing called a “shoey.” Jimmy Fallon wanted to do more than just hear about it.
On "The Tonight Show," Olympic curlers Becca and Matt Hamilton, a brother-and-sister duo, joined Jimmy Fallon and Jason Sudeikis for an early Olympics.
Rebel Wilson and Jimmy Fallon sang holiday classics that had been run through Google translate until they were only bizarre shells of their former glory.
Anna Kendrick fled to "The Tonight Show Starring Jimmy Fallon" studio after escaping from her 11th-story hotel room during a fire.
On "The Tonight Show Starring Jimmy Fallon," Anna Kendrick got to join Jimmy Fallon and The Roots in singing "Christmas (Baby Please Come Home)" along with the R&B songstress Darlene Love.
Late-night hosts were able to enjoy quite a few postelection jokes at Roy Moore's expense after Alabama's senatorial upset.
On "The Tonight Show," Jimmy Fallon mashed together the CW's "Riverdale" with the comic strip "Peanuts" into a great parody.
"The Tonight Show Starring Jimmy Fallon," spoofed Donald Trump's recent speech about Jerusalem with a hilarious commercial.
On "The Tonight Show Starring Jimmy Fallon," the host got into the Christmas spirit by putting on a Bruce Springsteen costume and rocking the crowd with a Trumpy version of "Santa Claus is Coming to Town."
On “The Tonight Show Starring Jimmy Fallon,” John Boyega responds to rumors that Prince Harry and Prince William might have cameos in the upcoming “Star Wars: The Last Jedi.”
On “The Tonight Show Starring Jimmy Fallon,” Daisy Ridley, known for her character Rey in the “Star Wars” sequel trilogy, stopped by to play the Whisper Challenge with Jimmy Fallon.
On "The Tonight Show," Adam Levine from Maroon 5 joined Jimmy Fallon for a little incognito subway station performance.
On The Tonight Show Starring Jimmy Fallon, Stranger Things cast members Noah Schnapp, Gaten Matarazzo, Caleb McLaughlin and Finn Wolfhard wowed the audience with some pretty sweet interpretive dance moves.
On "The Tonight Show," Jimmy Fallon was trying to help Jessica Alba come up with a name for her new baby, which ended up motivating her to reveal the baby's gender on the spot.
Lin-Manuel Miranda surprised a lucky fan when he dropped by "The Tonight Show Starring Jimmy Fallon." The Tony Award winner made up a song about the fan, Hamilton-style!
The loss ended one of the most quirky and original contestant appearances in game-show history, but his 'Tonight Show' appearance was equally engaging.