Martin's present to Tim: a memory machine.

Martin can't decide whether or not to return to Mars.

Tim diverts Mrs. Brown's attention while Martin returns the spaceship to the garage.

When a phone wire falls on Martin, he starts getting incoming calls.

Despite Martin's warning, Tim brings an ESP expert home.

Martin rocks the music world with his folk singing.

To help Tim meet expenses, Martin tutors an obnoxious child.

Martin's duplicating machine creates another Mrs. Brown.

A young boy hijacks Uncle Martin's spaceship.

A rainmaker offers his services during a dry spell.

While Uncle Martin is asleep, his alter ego appears a lookalike swinger named Pierre.

A rabbit eats a Martian vitamin pill and becomes 6 feet tall.

Tim's enemies increase rapidly after he basks in Martin's benevolence bulb.

The Case of the Missing Sleuth: Detective Brennan (Alan Hewitt) dissolves himself with Martin's molecular separator.

Tim's great-uncle demands to know where Martin fits on the family tree.

Martin suffers from temporary amnesia attacks, brought on by Martian hay fever.

To prove that childhood is unnecessary, Martin adopts an orphan girl.

Martin loses control of his power to move large objects.

Martin burns (and becomes transparent) each time Mrs. Brown plays her violin.

Martin's thrift lessons turn Mrs. Brown into a miser.

Tim tinkers with Martin's ship, shrinking it to the size of a toy.

Martin's invisibility mechanism goes haywire everything he touches disappears.

Color Martin green when he sees Brennan flirt with Mrs. Brown.

An experiment goes haywire, turning Martin into a walking magnet.

Tim is placed on the Teacher of the Year selection committee.

Martin feels that his youth is fading and asks Tim to help him rejuvenate himself with the aid of Black Light. However, things go awry when Tim screws up the process and Martin gets turned into an infant.

On Martian Mother's Day, Martin spots his mother's lookalike.

Mrs Brown's purchase of a new electric bed leads her to believe she has developed ESP as she can hear Martin's thoughts.

Tim accidentally gets mixed up with a fleeing secret government agent who is involved with a deadly organization called CRUSH. This leads Tim to go undercover with Uncle Martin by his side helping him stay out of trouble.

Despite warnings, Tim touches Martin's antennae and disappears.

In the desert, a gun-wielding camper spots Tim and Martin working on the spaceship.

Uncle Martin mistakes a hobo, Shorty Smith for a Martian Scout and brings him home. Shorty quickly becomes accustomed to the comforts of life and when Martin learns the truth, Martin and Tim have a hard time getting rid of him.

A Martian drug turns Mrs. Brown into a piano virtuoso.

Mrs. Brown is deluged with suitors after dousing herself with Martian "irresistible spray."

In Mexico, Tim and Martin witness the opening of an ancient box.

The time machine takes Tim and Martin back to 13th-century England.

One of Martin's odd gadgets makes Mrs. Brown two-dimensional.