It also makes me think about Gavin (my 4-year-old son) and letting him play. And how play leads to creativity. And his stuff about time is pretty great too. Ok, the whole thing's awesome.
By the way, for any younger readers, John Cleese was a member of Monty Python and he's considered one of the funniest people around. More recently, he's been in some Bond films and a couple of Harry Potter films. I think he plays a ghost in Harry Potter.