The Mind of a Chef, exec. producer Anthony Bourdain, originally aired on PBS in 2012 and is now in its 4th season. (Seasons 1-3 are available on Netflix.) It combines cooking, travel, history, and science into a funny, hunger inducing look into the lives, motivations, and palettes of some of the worlds best and most famous chefs.
Season 1 trailer https://www.youtube.com/watch?v=N4Blj2C_j3M