Jackie Coogan in The Addams Family

 
  John Leslie Coogan (October 26, 1914 – March 1, 1984)

Coogan began his movie career as a child actor in silent films. Years
later, he became known as Uncle Fester on the ABC sitcom The  
Addams Family (1964 – 1966).

1922

Christopher Lloyd, High School yearbook

Christopher Allen Lloyd played Emmett "Doc" Brown in the Back to the
Future trilogy (1985 – 1990), He rose to fame in the 1980s as Jim
Ignatowski in the television series Taxi (ABC, 1978 – 1982 & NBC,
(1982 – 1983).

Christopher Lloyd as a psychiatric patient in One Flew Over
the Cuckoo’s Nest, 1975. His first motion picture role.

Lloyd in Taxi

Christopher Lloyd from Back to the Future

Pam Dawber played Mindy McConnell in the ABC television
sitcom Mork & Mindy (1978-1982).    

  
                                  Robin Williams and Pam Dawber

Dawn Wells (Mary Ann) in Gilligan’s Island

Actress Dawn Elberta Wells is best known for playing Mary Ann
Summers on the CBS television sitcom Gilligan’s Island (1964-1967)

"I Love Lucy," was the first Hollywood-based sitcom to be shot on film with
three cameras in front of a live studio audience. It debuted on CBS as the #3 
show on TV, for the season.