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

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.

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

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

Martin's present to Tim: a memory machine.

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

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.

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

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

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

Martin's duplicating machine creates another Mrs. Brown.

A young boy hijacks Uncle Martin's spaceship.

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

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

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

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

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.

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

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

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

Martin loses control of his power to move large objects.

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

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.