3rd Rock from the Sun

3rd Rock from the Sun 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 a very insignificant planet. The extraterrestrials pose as a human family in order to observe the behavior of human beings. Sent to Earth to investigate civilization, an alien high commander and his quirky crew — military officer Sally, information expert Tommy and transmitter Harry — assume human identities to blend in. Although they possess superior intelligence, their navet about the human condition turns everyday events into farcical fun.