Alton Brown's regular Food Network show, Good Eats
is easily one of my favorite television programs. I've been collecting them on my DVR. He has said in interviews and his books that his reason for doing the show is to bring both science and entertainment into the television kitchen set. Hes not just performing the recipes for the camera, he is also talking (and often illustrating with sometimes hilarious giant props) about the history of the food, or dish, or technique, as well as the science behind how and why
the recipe or method calls for what it does, and what is happening at the molecular level in the food. You can also guarantee a quirky joke and/or pop culture reference in every episode (often in the title at least).
Hes also an avid motorcyclist, so last year, when they aired the first 'Feasting on Asphalt ' series (4 parts) of a cross-country trip from South Carolina to LA, back roads, diners, and truck stops only.. needless to say I was interested, and after seeing it, not at all disappointed.
This year, they filmed a 6 part trip up the Mississippi from the gulf to its headwaters in Minnesota, and it is airing now.