This has always bothered me - why can't they get actors who can throw (or swing a bat, hit a golf ball, etc.) without looking like a *****? (Exhibit A: Tom Cruise in Top Gun)
Now that I think about it, I guess if actors (or 95% of them) were athletic when they were young, they would have been on the field and not on stage. Maybe for most people, it's mutually exclusive.
Favorite Kenny Powers line so far: "For your information, I have full-sized balls."