Alton Brown (the host) brings a Bill Nye-style approach to his show and explains a lot of the underlying science behind whatever he's cooking. For me, the explanations are key. Some time ago I took the Myers-Briggs personality test, and while I take it with a grain of salt, one result that definitely fits with my self-perception is a love of theorizing. I do love to eat delicious meals, but what overcame my laziness is understanding what's happening when I throw the ingredients in the skillet.
Of course, I'm not even remotely close to an expert. It's a new hobby, and who knows, I might get bored with it in a few months. But for right now it's great fun.