I like how people assume Food Network (and HD) is like Gallery HD or basically a bunch of slow pans on food or still shots of food.
Food network is more about the personalities than it is about filming food. A majority of their good shows are super entertaining like: Ham on the Street, Unwrapped, Secret Life of... Iron Chef, the Bobby Flay shows. Sure all of their shows deal with food or people cooking food, but it's the food network!
It will be nice to see more of their programming sent 16:9 rather than letterboxed (SD ersion) and yes the increased resolution (and bitrate) will produce a clean image for these shows, I say bring it on! (GIADA!!!!)