My Favorite Martian (1963)

Tim O'Hara, a newspaper reporter, stumbles upon a downed alien spacecraft, discovering a living extraterrestrial inside. To avoid detection by government agents, the alien adopts the guise of Tim's Uncle Martin. While blending into Earthly life, Martin works on fixing his ship with hopes of returning to Mars. The duo navigates the challenges of keeping their secret safe, leading to humorous and heartwarming escapades as they form an unexpected bond.