I think the personality of the chef and the tips/cooking style draws me in more than anything. Here are some reasons why I like particular celebirty chefs...
Alton Brown.... basic fundamentals of cooking... I love watching him and his shows because I learn so much about things that I use in the kitchen.
Bobby Flay.... he appeals to my fire mouth. His cooking style and choice of ingredients appeals to me when it comes to robust and zesty food.
Their looks or sex appeal really do not affect what it is that I can learn from them.... it is what they can do to teach me how to please my pallet or the pallets of my family.
I like Rachel Ray.. because she usually cooks practical food and I like the Tasty Travels shows because it gives me ideas for food to cook as well as places to check out should I ever visit the towns for which the show is showcasing.