Television and Cinema Verities #82

"It came from Garry Marshall's kid who saw 'Star Wars,' and he went to his father and said, "Dad, why can't they have an alien on 'Happy Days'?" And Gary was like, "I don't know, it will be weird." But I think he did it as kind of a shout out to his son, as a one-off thing, and, I guess, just because it was just so strange. Me acting off of Henry, and Mork is there to kidnap The Fonz. It got a huge reaction."

- Robin Williams discusses the origins of Mork and Mindy (1978 - 1981) at Moviefone (from 2011).