"Cal Dodd: I'll never forget one day with Norm Spencer, who was Cyclops. Norm and I decided that when you could get an extra part in an episode, it was great, because when you can get another line as another character, you got an extra half of what they paid for Wolverine. So there was always competition. There's an episode where Wolverine is playing pool and a bunch of punks came in. For one of the voices, the director said, "Does anyone do Jack Nicholson?" Of course Norm puts his hand up right away. And I just looked at him and said, "Really?" So they let him read. Then I said, "Can I read this line, too?" I don't remember the line, but it was like, [doing a Nicholson voice], "I wonder if this is as good as it gets." Norm just went, "bugger off!" I do a great Jack Nicholson and no one knew that. I got the line."
January 1, 1970
https://en.wikiquote.org/wiki/X-Men_(TV_series)