The twisted joy of watching America's Funniest Home Videos, the new Bobb'e show, and the genius of despair.com brings viewers back time and time again. Is it sharing in the universal language of "suffering caused by stupidity" at someone's expense, is it the calm we get from thanking our lucky stars it was not us caught on tape doing the same thing, or is it just plain fun to enjoy a good laugh now and then that brings us back?