My Favorite Martian
News producer Tim O'Hara (Jeff Daniels) is fired for unwillingly "compromising" his boss's daughter, reporter Brace Channing (Elizabeth Hurley), during a live broadcast of the first Space Shuttle launch from Vandenberg Air Force Base. His assistant, Lizzie (Daryl Hannah), tries to comfort him, and it is apparent she has a crush on him. Later, Tim witnesses a small Martian spacecraft crash landing. Realizing his chance to deliver a story that will "rock the Earth", he brings Brace to show her the ship, but by the time he reaches the crash site the ship has been shrunk to toy size. Nearby, its only occupant (Christopher Lloyd) hides in the bushes. Tim takes the now-shrunken spaceship home with him, and the Martian follows him to retrieve it. After a confrontation, Tim is knocked out and the Martian disguises himself to look like Tim and ends up kissing Lizzie when she visits.
When Tim confronts the Martian the next morning, he finds out that a small device called an "electron accelerator", which powers the control systems of the ship, is damaged beyond repair and the Martian needs Tim's help to find a replacement. The Martian takes the name "Uncle Martin" and explores the city with Tim, unaware that they are being watched by SETI, which discovered DNA left by Martin while hiding out at Tim's. While exploring Tim's neighborhood, Martin tells him about a friend of his named "Neenert", one of his planet's most gifted Martian scientists, who came to Earth in 1964 but never came back. Brace is captured by the SETI gang and is interrogated.
Tim secretly tapes Martin and Zoot with hidden cameras to back up his story and impress the TV station staff, but he eventually decides not to reveal the tapes as he has become fond of Martin. Meanwhile, Martin and Zoot discover a subsystem of the ship called the Interstellar Safety System, which is prepared to self-destruct. Brace discovers the footage of Martin in his Martian form and she steals the tape. Lizzie shows up at Tim's house to discover Brace stealing the tape. Thinking that Tim cheated on her, Lizzie rejects him and storms out, only to be distracted by the now-full-size spaceship, and is pulled into the cockpit by Zoot.
Martin and Tim go after the Martian evidence, shrinking the ship (along with Zoot and Lizzie) and racing down to the station, where Tim admits to Martin that he has been videotaping him, but says he likes Martin and apologizes. Accepting Tim's apology, Martin subdues Brace, then disguises himself as her so he can take her place on the news, and Martin's alien form is almost exposed during the broadcast, which is carefully watched by Elliot Coleye (Wallace Shawn), head of SETI. As footage from another news report is aired, Tim and Martin escape the station, pursued by SETI through the sewers in Tim's car, shrunken via Martin's device. They eventually end up in the hands of Coleye, who take them back to SETI for investigation.
At the lab, Tim tricks one of the scientists into growing Martin's ship to normal size, breaching security and allowing Lizzie and Zoot to escape. However, the trio's escape is blocked by two security guards, one of whom shoots Zoot. With the help of a "nerplex", a piece of alien gum that can transform anyone into another life form, Lizzie transforms into a hideous monster from "Veenox 7". She defeats them, then spits out the nerplex and turns back into a human.
The three eventually succeed in locating Martin, who has undergone surgery involving the removal of his antennae and presumably killing him. When Martin and Zoot reunite, he comes back to life and wakes up. They then escape SETI headquarters and Tim and Lizzie prepare to bid farewell to Martin, installing a car alternator in place of the ship's damaged electron accelerator. However, they are interrupted by Coleye, who attempts to stop him from escaping, saying that he will stop at nothing to prove the existence of aliens, even if it means killing Martin. A SETI official named Armitan, revealed to be Martin's old friend Neenert (Ray Walston), saves Martin by destroying Coleye's gun and tossing Coleye wildly in the air. After a reunion, Martin and Neenert fly back to Mars on their ship, much to Coleye's dismay.
Eventually, Coleye catches hold of the piece of nerplex left by Neenert. Believing that he can still prove his cause, Coleye chews on it, and he is turned into an alien. Laughing, Coleye accidentally swallows the gum, which presumably leaves his transformation permanent. He ends up caught and tranquilized by his own organization as Tim and Lizzie escape the scene.
In the end, Martin and Zoot decide to return to Earth and stay with Tim and Lizzie, while Neenert flies Martin's spacecraft back to Mars. Tim initially objects to Martin's staying, but Lizzie convinces Tim to change his mind.
absurd, psychedelic, romantic