Richard Pryor asked Chevy Chase why he didn't tell Johnny Carson he was taking over 'The Tonight Show' while they both visited the host.

Everybody who was anybody landed on Johnny's couch, clockwise from upper left: Richard Pryor, 1986; Drew Barrymore, 1982; Bette Midler, 1992; then-Gov. Jerry Brown, 1979. (Ron Tom, Gene Arias ...