3rd ROCK FROM THE SUN
3rd Rock From The Sun, also known as 3rd Rock, is an American sitcom that aired from 1996 to 2001 on NBC. The show is about four extraterrestrials who are on an expedition to Earth, which they consider to be the least important planet. (Earth is the third planet from the sun.) The extraterrestrials pose as a human family in order to observe the behavior of human beings.
The series features John Lithgow as the High Commander (Dick Solomon). He has assembled an elite team of experts: A decorated military officer Sally Solomon, played by Kirsten Johnston; a seasoned intelligence specialist, Tommy Solomon (Josrph Gordon-Levitt) and, as they had an extra seat, Harry Solomon (French Stewart) joined in. The premise of the show revolves around an extraterrestrial research expedition attempting to live as a normal human family
(Source: wikipedia.org)