National Geographic always has had the good stuff...
Sad to say that Discovery and History channel have been falling by the wayside lately...glad I don't have cable anymore, those were the only channels I really watched...
The NatGeo program looks like it'll be a good one, PBS had a Nova episode about the escape from the German POW camp where the guys built a glider. The other PBS show I liked, was the Secrets of the Dead episode about the massive tunnel out of the POW camp.