Just watched Bill Maher's new HBO special, But I'm Not Wrong. The jokes are fine but I'm more fascinated at the evolution of this man's delivery. When I first saw him years ago, he was doing a respectable simulation of Johnny Carson's timing and pace. Now, he seems to be trying to turn himself into Red Skelton. He keeps breaking himself up, laughing like he's never heard his own material before. Two more of these and he's going to be dressing up as Clem Kadiddlehopper and doing jokes about Gertrude and Heathcliff, the two seagulls…