Orson: You opened the door to your emotions, didn't you?
Mork: Yes, Sir.
Orson: You realise you've broken the highest Orkan law. It is my duty to report you to the Council.
Mork: I understand. But I don't regret what I've done, sir. You see, for the first time in my life, I feel really alive, I feel fantastic! Oh, I wish you could try it! I wish you could feel some of the things I've been feeling!
Orson: Impossible. I could never do that. They'd throw me in prison.
Mork: Oh, I don't mean to be disrespectful, your immenseness, but until you can marvel at a rainbow after a storm or rejoice at seeing a baby walk for the first time, or hold someone and have them feel the same warmth inside as you feel close to them outside - until you can do these things, aren't you already in prison?
When Mork and Mindy are walking away from the lake after they first meet, there is a set of 8 lights in two rows of four in the background.
Robin Williams improvised so much of his dialogue that the show's writers finally stopped writing his lines and just left blank space in the scripts with cues and prompts for him.