I've watched a number of Dr. Kaku's shows. While interesting, they are really slow, and he seems *really* into himself.
What I mean is, he talks about string theory for about 30 seconds, then it jumps to a scene of him ice skating for 90 seconds. Then he talk about effects of a black hole for a minute, then him dancing with his wife for a minute. Oh well, it IS his show he can do what he wants! 