Arnold Schwarzenegger's Total Recall arguably launched a subgenre of reality-bending sci-fi classics.

One of Star Trek's most groundbreaking episodes cut its most controversial concept, but the idea lived on 38 years later in the form of a movie.

Add Yahoo as a preferred source to see more of our stories on Google. Dave Bowman walking through the Discovery One spacecraft corridor in 2001: A Space Odyssey (1968). - MGM Studios Science-fiction ...