This recent article describing how the Yankees fulfilled one of Billy Crystal's dream by signing him to play one spring training baseball game brings to mind:

If you could play any sport, for any team (if your sport is a team sport), what would you do and who would you play for?

For me, I would have liked to have been an Olympic athlete. I once had aspirations to compete in taekwondo, but injuries, school, etc had other plans for me.