WATCH: Ashton Kutcher Joins Fallon for 'Secret Ingredient'Celebrities take turns guessing random secret ingredients hidden in a three-course meal.
Why We Spend Less on Father's Day than Mother's DayAnd watch Jimmy Fallon's #DadQuotes segment
WATCH: Miley Cyrus and Jimmy Fallon Disguise Themselves on NY SubwayThe pair performed "Jolene" before revealing their true identities.
WATCH: Fleetwood Mac, Jimmy Perform with Classroom InstrumentsFleetwood Mac’s Lindsey Buckingham & Christine McVie with "Don't Stop"
Jimmy Fallon's #MyWorstSummerJobThe host asked Twitter followers to tweet him funny, weird, or embarrassing jobs they've had using the hashtag.
Justin Timberlake & Jimmy Fallon Bike TogetherJust another reason why we love this funny friendship.
Jimmy & Aziz Ansari Dramatically Read Yelp ReviewsOne of my favorite segments!
Star Wars Characters Cover Smash Mouth's 'All Star'Watch as the Star Wars characters sing the one hit wonder "All Star" by Smash Mouth.
Take Your Parents to Work Day with Jimmy FallonIn honor of Take Your Child to Work Day, Jimmy talks to kids about what their parents do all day at work.
Dr. Phil Shares His Secret for Staying Married for 40 YearsDr. Phil talks about celebrating 40 years of marriage and how he ended up walking around in the LA heat with a sock puppet on his head.
Jimmy Fallon Pays Tribute to David Bowie in SNL MonologueIt wasn't funny, but it was awesome.
Jennifer Lopez Struts Her Stuff in Silly Dance Battle on 'Fallon'Fallon went first, making up a silly dance called, “Skinny Jeans.” Lopez proceeded to show him up with a very J.Lo version of “Washing Machine Spin Cycle.”