I find 2 rules of baseball to be just completely daft.

Firstly, the fact that no-one can run a plate on a foul ball, yet can still be caught or run out. That just stinks... either the ball is foul or it isn't.

The second thing that really gets me is the fly ball rule...I just can't see why you're not allowed to run until the ball hits the ground (or is caught).

The 'dedicated hitter' stinks as well, but at least that isn't universal in the game.