The Tonight Show host entertains for the second time (once earlier during the Clinton years) and plays it admirably down the middle. "Half of you are writing a book," he says of the crowd. "And the other half haven't read one." Bush himself pokes fun at getting stumped at a press conference when asked to name his biggest mistake. "I was going to start off tonight telling some self-deprecating jokes," he says. "But then I couldn't think of any mistakes I had made to be self-deprecating about."