3rd Rock from the Sun was an NBC sci-fi sitcom created by Bonnie Turner and Terry Turner.
The show aired from January 9, 1996 to May 22, 2001, lasting for 6 seasons & 139 episodes.
The series was about four extraterrestrials: Dick, Sally, Harry & Tommy, who are on an expedition to Earth and they pose as a human family to observe the behavior of human beings.
- John Lithgow as Dick Solomon
- Kristen Johnston as Sally Solomon
- French Stewart as Harry Solomon
- Joseph Gordon-Levitt as Tommy Solomon
- Jane Curtin as Dr. Mary Albright
- Simbi Khali as Nina Campbell
- Wayne Knight as Don (seasons 2-6)
- Elmarie Wendell as Mrs. Dubcek
- David DeLuise as Bug Pollone
- Ian Lithgow as Leon
- Danielle Nicolet as Caryn
- Chris Hogan as Aubrey Pitman
- Ileen Getz as Dr. Judith Draper
- Shay Astar as August Leffler (seasons 1–3)
- Larisa Oleynik as Alissa Strudwick (seasons 4–6)
- Ron West as Dr. Vincent Strudwick (seasons 2–6)
- William Shatner as The Big Giant Head
- Jan Hooks as Victoria Marie "Vicki" Dubcek [seasons 2-4]
- John Cleese as Dr. Liam Neesam [seasons 3 and 6]
- Chyna as Janice
- Michael Milhoan as Coach Strickland