JIMMY FALLON is gearing up to take over Jay Leno’s job as host of “The Tonight Show” after NBC airs the Winter Olympics next year. The hilariously funny 38-year-old first made a name for himself on “Saturday Night Live,” then went on to become an after-hours staple with his own “Late Night With Jimmy Fallon.” With his new gig now official, The ENQUIRER has dug up some little-known facts about the funnyman exclusively for our readers!

As a child, Jimmy was such a fan of “Saturday Night Live” that he and his older sister would reenact the “clean parts” of the show, which his parents taped for him.

 Jimmy was a computer science major at the College of Saint Rose in Albany, N.Y., but switched to communication in his senior year, dropping out a semester shy of a degree to pursue comedy in L.A.

 Jimmy, along with his sister Gloria, wrote the humorous book “I Hate This Place: The Pessimist’s Guide to Life” in 1999. He has also written a children’s book called “Snowball Fight!”

 In 1998, Jimmy had a small role as a photographer on an episode of the Michael J. Fox TV show “Spin City.”

 “Late Night with Jimmy Fallon” first aired on March 2, 2009, with a stellar lineup of guests, including Robert De Niro, Justin Timberlake, Nick Carter and musical guest Van Morrison.

 He once dated actress Winona Ryder

 Following the Boston Red Sox’s World Series-clinching game over the St. Louis Cardinals in 2004, Jimmy ran onto the field at Busch Memorial Stadium with Drew Barrymore to film a scene for their movie “Fever Pitch.”

 He has a golden retriever puppy named “Gary Frick” – and it’s a GIRL!