I'm only a layperson who struggles to understand the basic concepts of physics, but I found this Nova treatment of string theory completely lacking in substance. How many animations does it take to convey NO information? Apparently, a lot. This documentary consists of little more than image after image -- most of them unimaginative and unenlightening. Do I need to see apples falling on Brian Greene to understand gravity? Do I need to see those apples several times? No. The program is absurdly repetitive, and keeps promising information that it does not deliver. Save your money and read the book.