Watch Rachel McAdams Explain Her Hilarious Ride Along With "J Lo"
Tina, Amy, and Jimmy Can't Keep a Straight Face While Trying to Fool Each Other
Paul Rudd Shows Off His Drinking Skills With Jimmy Fallon
James Marsden's First Instagram Was Taken From Your Dreams — See the Snap!
FKA Twigs Knocks It Out of the Park in Her US Debut
Even President Obama's Trying His Hand at Singing "Shake It Off"
Jimmy Fallon's Wildest Celebrity Stunts on The Tonight Show
Bradley Cooper Smashing Eggs on His Head Is Jimmy Fallon's "Best Game" Ever
This Is What Happens When Brad Pitt and Jimmy Fallon Have a Danceoff
Meet Kristen Stewart's Adorable New Best Friend
Jennifer Garner and Jimmy Fallon Are So in Sync, It's Scary
Jennifer Garner's Impression of Ben Affleck Is Hilariously Bad