I just gave my brother a pretty good game of tennis. He's pretty good and it was only the third time I've ever played (even though he claims it was "The worst game [he's] ever played." Sure.)
It was 6-2, 6-0 (ugh), 4-6, 6-3. I blew the last set, it was 2-2 and then my game fell apart. I think I might've found a good alternative to racquetball.
EDIT: If you want to have about 40 orgasms:
http://demonexterminator.ytmnd.com/