Close Encounters of the Third Kind is a 1977 American science fiction drama film written and directed by Steven Spielberg, starring Richard Dreyfuss, Melinda Dillon, Teri Garr, Bob Balaban, Cary Guffey, and François Truffaut. From Wikipedia
The 30-minute YouTube release uses archival interviews with original designers alongside 3D concept art to explain how the project morphed into Star Trek: The Motion Picture.
