The term 'SITCOM EXTRATERRESTRIAL' can be summarized as a three-letter acronym, ALF, which stands for the popular 1980s television show, 'ALF'. The show follows the life of an alien from the planet Melmac, who crash lands in the garage of the Tanner family. ALF, short for Alien Life Form, is a wise-cracking, furry creature who quickly becomes part of the family. The show ran for four seasons and was a huge success, becoming one of the most beloved sitcoms of the decade.