If you have an hour to spare, I highly recommend Yoko's
GDC presentation "Making Weird Games For Weird People" for anyone wanting to get an understanding of his unique approach to game design.
He's remarkably humble and unpretentious about what he does, but he's a genuinely interesting -and IMHO criminally underrated- creative. Some of the high-level points are just what he says in his recent "sock-puppet" promo, but there's also some terrific pragmatic advice about building drama and creating the sort of emotional impact that is his signature.