When he isn't steaming up the screen as McDreamy on Grey's Anatomy, Patrick Dempsey likes to heat up the pavement behind the wheel of race cars.
Before hitting it big in Hollywood and winning two Oscars, Denzel Washington was hitting it big as a basketball player at Fordham University.
Mark Harmon was the starting quarterback at UCLA. He's sort of a quarterback in the NCIS office calling all the plays as Gibbs, right?
In addition to being a singer, dancer, and general douchebag, Justin Bieber is actually quite the basketball player - his mean crossover dribble earned him NBA Celebrity All-Star Game MVP honors!
BONUS! Justin Bieber
Justin Bieber ALSO plays hockey! He once crashed a junior hockey team's practice in Atlanta.
If the Spice Girls ever want to reunite, we volunteer Duchess Kate Middleton as tribute to take over the role of Sporty Spice!
Jason Segel might not have seen much time on the court, but he WAS Jason Collins' backup in high school. That totally counts!
Dwayne "The Rock" Johnson
Before becoming a professional wrestler and eventually an actor, Dwayne "The Rock" Johnson was leading the University of Miami football team to a National Championship title in 1991.
It might be hard to believe by looking at him now, but once upon a time Bruce Jenner was an Olympian.
Before she was walking the runway in the Victoria's Secret Fashion Show and gracing the cover of Sports Illustrated's Swimsuit Edition, Kate Upton was a nationally ranked equestrian. So many bouncing boob jokes about barrel jumping. So little time.
Jessica Biel's soccer training came in handy when she played Mary Camden on Seventh Heaven. Mary was a star soccer player. Biel also took gymnastics as a child.
Before he was 2 Chainz, he was Tauheed Epps (also Tity Boi, but we won't talk about that.) Epps was a star high school basketball player at North Clayon High School in Georgia.
Emma Watson might look petite and unassuming, but don't let that fool you. She's a star field hockey player.
Kaley Cuoco might have bought her boobs, but she earned those abs and arms on the tennis court!