Bob Newhart starred in The Bob Newhart Show as Dr. Robert Hartly.
Bill Cosby starred in The Cosby Show as Dr. Cliff Huxtable.
Bob Newhart starred in Newhart as Dick Loudon.
Bill Cosby starred in The Cosby Mysteries as Guy Hanks and in Cosby as Hilton Lucas.
Bob Newhart starred in Bob as a guy named Bob and ruined…