Ramsay, just tops them all. Not that I don't have appreciation for some others, just Ramsay tops the list. He's an actual cook, started from the bottom of a line chef and worked his way up, has as many (possibly more) michelin stars than anyone ever, and knows what it takes. I think it says something that the OP mentioned ramsay first when he mentioned a few celeb chef examples. Plus the only TV chef not on cable, but a major broadcaster. Entertaining personality aside, he's simply the best. i've eaten at a few of his places, everything about it is just amazing. Most restuarant employees will tell you he's earned his additude he has.