I wish that I could be this man and never have to sleep. I mean, don't get me wrong, sleeping is quite pleasurable, for a number of reasons.
But think how much stuff I could do if I didn't have to! And yes, I am quite familiar with the concept of polyphasic sleep having a brother who has attempted using the Uberman Sleep Schedule on several occasions(I call it the Loserman Sleep Schedule, because it meant he had to stop whatever we were doing every four hours to go down for his nap).
While it seems like a great idea - to have 30-40 hours extra per week, similar to raw food diets, it seems that no one is able to stick to it permanently.