Galaxy Quest

Galaxy Quest is a 1999 American comic science fiction film directed by Dean Parisot and written by David Howard and Robert Gordon. A parody of science fiction films and series, particularly Star Trek and its fandom, the film stars Tim Allen, Sigourney Weaver, Alan Rickman, Tony Shalhoub, Sam Rockwell, and Daryl Mitchell as the cast of a defunct cult television series called Galaxy Quest, in which the crew of a spaceship embarked on intergalactic adventures, who are suddenly visited by actual aliens who believe the series to be an accurate documentary, and become involved in a very real intergalactic conflict.