Galaxy Of Terror (1981)

Original trailer - Roger Corman produced this sci-fi/horror Alien ripoff with a twist about the crew of a spaceship confronted with their worst nightmares on a desolate alien planet. Stars Ray Walston, Grace Zabriskie, Robert Englund, Erin Moran, Zalman King and Sid Haig. Directed by Bruce D. Clark. Great set design by James Cameron. Note the use of Battle Beyond The Stars footage early in the trailer.