Gordon Shumway, last known survivor from the planet Melmac, crash-lands his spaceship into the Tanner family's suburban garage. Willie dubs him "ALF", short for Alien Life Form. After convincing a military officer that they are not harboring a space creature, the Tanners decide to take ALF in as a member of the family.

Gordon Shumway, last known survivor from the planet Melmac, crash-lands his spaceship into the Tanner family's suburban garage. Willie dubs him "ALF", short for Alien Life Form. After convincing a military officer that they are not harboring a space creature, the Tanners decide to take ALF in as a member of the family.

ALF decides to have some fun while a nervous Mrs. Ochmonek baby-sits Brian.

It's Christmastime. Unfortunately ALF chops the Christmas tree into firewood before anyone notices. The Tanners then have two tasks: to teach ALF all about Christmas and find a new Christmas tree.

The Tanners continue to try and jog ALF's memory, and deal with the police at the same time.

ALF goes through a 24-hour period of bizarre behavior.

ALF thinks he witnessed a murder at a neighbor's house.

A cockroach from outer space invades the Tanner home.

When Mr. Ochmonek becomes sick during a flight, ALF flies the plane.

ALF is relocated to the family garage as a result of his mischievous behavior.

Mrs. Ochmonek thinks she's gone crazy when she spots ALF in the backyard.

ALF joins a monastery after learning that his parents were married before he was born -- a disgrace on the planet Melmac.

The Tanners become a TV-ratings family and ALF decides to rig the system so that his favorite program becomes a hit.

ALF gets a severe case of hiccups after being excluded from Dorothy and Whizzer's wedding party.

ALF befriends the Ochmoneks' belligerent nephew, Jake.

ALF demands a fair trial after being accused of throwing a football through the Ochmoneks' window.

ALF lends a hand with the neighborhood block patrol and ends up confronting a prowler in the Ochmoneks' house.

It's up to Willie to save ALF from the SWAT team surrounding the Ochomonek house, in which ALF had been chasing a prowler.

ALF, jealous of the attention a stray dog is getting, gives the pooch to a mean old woman who claims to be the owner.

Willie abandons his belief in pacifism after meeting the hostile father of the bully who's been pushing Brian around.

Willie has problems trying to sell the house because ALF keeps scaring off potential buyers with phony ghosts.

ALF fantasizes that he reveals his existence to the world and serves as substitute host on David Letterman's show.

ALF hides out in the back seat during Lynn's date at the drive-in.

The Tanners let Trevor Ochmonek stay at their house after he has a fight with his wife.

ALF hosts "The Tonight Show", with Ed McMahon.

ALF hosts "The Tonight Show", with Ed McMahon.

The Tanners are invited to a Thanksgiving dinner with the Ochmonek's bizarre relatives.

ALF must avoid the Alien Task Force when a bum blows the whistle on him.

In a nightmare, Willie dreams ALF is his school roommate.

ALF is convinced gangsters are chasing the Tanners' houseguest.

ALF's expose earns Willie a guest spot on David Horowitz's consumer advocate show.

An extortionist threatens to turn ALF in to the immigration authorities for being an ""illegal alien"".

ALF blames his streak of bad luck on a Melmac superstition.

ALF sees Jake's kleptomaniac mother arrives for a visit, and steals a broach from Kate.

ALF imagines in black and white that he and the Tanners are silent-movie stars.

ALF prepares for the worst after experiencing a mild earthquake.

ALF shields Willie when a criminal resembling him is profiled on a crime-stopper TV show, but Trevor turns him in.

ALF's attitude toward cats changes after his first encounter with kittens.

The Tanners pamper ALF after he catches his first Earth cold.

ALF is relegated once again to the attic when the Tanners throw a Hawaiian luau.