There are shows that are informative and then there are shows that are just trying to sell stuff. Some of them do both and I don't mind those as much.
I like Lindner's Angling Edge, Fishing with Joe Bucher, The Sportsman's Journal, Bill Dance, Jimmy Houston, Bass Pro, In-Fisherman, Midwest Outdoors, The Fishing Guide(Local show in Madison, WI), Hank Parker.
The rest I don't care for...too boring or little info given on how to fish or too many products being pushed.