We got to be really good friends [Jack Lemmon and Walter Matthau]. It was just thrilling, every day. Every single day. I had a big couple of musical numbers in [Out to Sea], and I remember doing one of them and shooting it from beginning to end.

I really enjoyed doing that [Law & Order: Criminal Intent (2004) - "Graham Barnes"]. I got to work with Margaret Colin, who was a blast to work with, and a wonderful actress, and Taylor Roberts. She was fantastic. And getting to work with Vincent D'Onofrio, who's amazing. But I loved the characters of the parents, these sick psychiatrists.

The character of Brent Spiner. We certainly collaborate on the concept of that, but he basically writes the script, then it's sort of a combination of his voice and my voice.

[Billy Bob Conroy role] that was a favor. Actually, the lady who cast Night Court asked me to do it, because it was a Friday, and the person who'd been rehearsing it all week got sick and couldn't come to the taping. And she figured I could put it together pretty quickly - it was not all that big a challenge, frankly - and I said, "Of course." I owed her, after all. Gilda Stratton was her name. She was a really, really nice person. So I did it.

There's such a grand fraternity of actors who've played the Joker, not the least of whom is Mark Hamill, who voiced it for so long and was so great. I did it one time and... I've gotten some feedback on it from people who've seen it and really enjoyed it, but I don't know.

Actually, I had a really nice part in that movie [Ladies And Gentlemen, The Fabulous Stains]. I mean, I have, like, one second in the final-cut version, where I say "You're fired" to Diane Lane. That's about all you see of me.

I have to go with Data's makeup, because that was basically every day, 10 months out of the year, for seven years. There were only a couple of days that I had to endure for Dr. Soong.