The only one of those I've heard of is George Foreman, and he's a boxer, not a cook.

I learnt to cook when I was a student sharing a house with a couple of other chaps. We got into the habit of taking it in turns to cook a big meal for all three of us once a week. One of them was a vegetarian. While vegetarianism is silly (denying oneself tasty pork is obviously crazy) vegetarians are useful, in that you have to know what you're doing if you want to make edible vegetarian food.