3rd Rock from the Sun
Overview
3rd Rock from the Sun is an American sitcom that aired from 1996 to 2001 on NBC
NBC
The National Broadcasting Company is an American commercial broadcasting television network and former radio network headquartered in the GE Building in New York City's Rockefeller Center with additional major offices near Los Angeles and in Chicago...

. The show is about four extraterrestrials
Extraterrestrial life
Extraterrestrial life is defined as life that does not originate from Earth...

 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.

"As many intelligent people know, aliens are all around us. This is a story of a band of four such explorers.
 
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