I was a hybrid in high school... I played football (american) and baseball, and yet I'd come home from practice/games and play SWG for 10 hours before bed. During practice, I'd talk with my friends about random star wars trivia, the newest RPG's that were out etc...
Just last night, I played DnD with a group of friends, one of whom is 6'4", 260lbs and is a discus thrower for his college. He squats approximately 800 lbs. And he's easily the most into the DnD of any of us, speaking in accent, damn near LARPing. He's got thousands of hours playing Morrowind, Diablo 1/2, Warhammer 40k games, KOTOR 1/2 etc...
Yep, I love me some geeky athletes.