My Favorite Martian stars Jeff Daniels as Tim O'Hara, once a newspaper man and now a struggling television producer in Santa Barbara. Tim has a crush on vapid news reporter Brace Channing (Elizabeth Hurley) while overlooking his feelings for Lizzie (Daryl Hannah), a technician working at the station. Driving home one night, Tim wanders upon the crash landing of a spaceship from Mars. The Martian inside (Christopher Lloyd) has come to Earth searching for a fellow Martian who had been lost here 35 years ago. After the crash, he hides on the beach and shrinks his spaceship to the size of a toy to avoid detection; Tim finds the ship anyway, and takes it home. With little choice, the Martian, aided by his sentient and very neurotic spacesuit, follows Tim home and reveals himself. Tim sees the alien as his ticket to the big time, but the Martian, now masquerading as Tim's Uncle Martin (thanks to some Martian gum that transforms his appearance to that of a human) thwarts Tim at every turn. Just as he gets the video he needs for his story, O'Hara develops a friendship with his planetary neighbor and new "Uncle." The two suddenly find they are racing against the the clock -- a government team, led by a wacky scientist (Wallace Shawn), hunts Martin down, and the spaceship (a rental) is on a timed sequence to self-destruct if it cannot be repaired in time. Along the way, Tim loses his infatuation with Brace and finds his true feelings for the loyal Lizzie. Martin might also find his lost friend on Earth, just as he has found new ones.
by Ron Wells synopsis