Bill Cosby has yet to begin his stand-up career.
Bill Cosby . Beginning in the 1980s , Cosby produced and starred in a television sitcom , The Cosby Show , which aired from 1984 to 1992 and was rated as the number one show in America for five years , 1984 through 1989 . The Cosby Show . The Cosby Show was based on comedy routines in Cosby 's stand-up act , which in turn were based on his family life .