P!nk Sings Fall-Themed #Hashtag Songs On 'Fallon'“Fall is here to remind you/ of the allergies you thought went away."
Miley Cyrus and Jimmy Fallon Photobomb NYC VisitorsCyrus and Fallon popped into view with props including umbrellas and a giant hotdog.
Watch Demi Lovato & Jimmy Fallon Have a 'Lip Sync Conversation'The exchange featured lyrics from Adele, DJ Khaled, Ed Sheeran, Miley Cyrus and more.
Justin Timberlake Returns to Camp Winnipesaukee with Jimmy FallonThe two sing 4 Non Blonde's hit song "What's Up" and Gloria Estefan's "Rhythm Is Gonna Get You."
Harry Styles Gets Wish Granted by Stevie NicksIn addition to acting on the show, Styles talked about the role he played in the upcoming movie, Dunkirk, which opens in theaters Friday (July 21).
Watch Liam Payne Perform 'Strip That Down' on 'The Tonight Show'The performance featured backup dancers in a big neon frame and Payne gave a shoutout to the talk show host.
Watch Shawn Mendes Perform 'There's Nothing Holdin' Me Back' on FallonMendes received a standing ovation for the performance.
Watch Niall Horan Try to Write a Song About 'Quickly Clicky Pens'Horan and Jimmy Fallon have fun in the segment 'Instant Song Challenge.'
Niall Horan Peer Pressures Jimmy Fallon into Gangnam Style DanceHoran had some fun at Jimmy Fallon's expense and performed his single "Slow Hands" on The Tonight Show.
Jimmy Fallon Pays Tribute to David Bowie in SNL MonologueIt wasn't funny, but it was awesome.
Watch Harry Styles and Jimmy Fallon's Snappy New SNL PromoThis will be the first time the show has been aired live on the East and West Coast.
Demi Lovato and Jimmy Fallon Play Teen Girls in "Ew!' SketchDemi held her own in the comedy department, practicing kissing on an Ed Sheeran pillow (Fallon's had Mario Lopez's face on it).