During its five-year run on primetime, the show underwent more than fifteen time-slot changes.
Dr. Albright, have I been a perfect ass?
Mary Albright: Aw, nobody's perfect.
During the filming of the final season, NBC refused to let the producers know whether or not they had been renewed until after the filming of the final episode, in order to try and draw in viewers. To compensate, the creators filmed two different endings. In the first ending, which was shown on network television, the Solomons went back to their homeworld and erased Mary's memory. In late 2001, the second ending was shown in syndication for what was billed as the "first and only time." This "second ending" is actually an extension of the original: Mary wakes up and goes to the Solomon's car and finds that Dick has given her the keys (you can see Dick tucking something in her hand in the original broadcast ending). When she puts the key into the ignition, a naked Dick appears next to her in the car and screams "ALIEN ABDUCTION! ALIEN ABDUCTION!" before grabbing Mary and disappearing with her.