ALF is an American sitcom that aired on NBC from September 22, 1986, to March 24, 1990.
The title character is Gordon Shumway, a sarcastic, friendly extraterrestrial nicknamed ALF (an acronym for Alien Life Form), who crash-lands in the garage of the suburban middle-class Tanner family. The series stars Max Wright as father Willie Tanner, Anne Schedeen as mother Kate Tanner, and Andrea Elson and Benji Gregory as their children, Lynn and Brian Tanner. ALF was performed by puppeteer Paul Fusco, who co-created the show with Tom Patchett.
Produced by Alien Productions, ALF originally ran for four seasons and produced 99 episodes, including three one-hour episodes that were divided into two parts for syndication, totaling 102 episodes
Source: Wikipedia, "ALF (TV series)", available under the CC-BY-SA License.