Just when you thought Chan Ho Park was finished, there he is — still pitching. Not only does Park still play baseball in his home country of South Korea, for the Hanwha Eagles of the Korea Baseball Organization, but he's busy pitching products on TV. More specifically, he's rapping about them: The Korea Life Insurance company has itself a splendid spokesman. The commercial is great, even you can't understand most of it. Poking himself in the eye with the sunglasses, sitting in the egg chair from "Men In Black," the faux hip-hop posturing. It's what you want from Chan Ho Park the personality, though he probably gives American baseball fans mixed feelings.