Certainly I find it most interesting to play a role that I can invent from nothing.

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.

It really was not that difficult a process, because I was playing [Data from Star Trek] something that doesn't exist. So it was really based on... Imagination was the key element in that, and whatever I could think of, I could do, because there was no precedent for it. It wasn't like someone was going to say, "Well, an android would never do that." They didn't know!

[Fan In Lobby from Stardust Memories] that was just after The Dain Curse. My other big uncredited role from back then.

I don't know if the character's come back and it was someone else playing it, or maybe they never did it again. But I loved it. It was a great part [The Joker] to play.

I've played myself before this ["Brent Spiner"] - and I've played myself since, for that matter - and playing yourself one of the most difficult characters you can play, 'cause God knows most of us don't know who that is.

[The Aviator] came about through John Logan, who I've been friends with for many years.