I too support teaching FISTICUFFS Brick Break, as it's the 4th most powerful fighting move Primeape can learn in this game, behind focus punch, which is fairly useless, Dynamic punch, which while useful, has a base 50% accuracy, and cross chop, which is still fairly inaccurate, but is a pretty good move. I'd end up with him knowing cross chop, brick break, thunderbolt or rock slide for flyers, and maybe fire punch, in case of bugs. I know this is thinking ahead a bit, but still.