In the movie 'Star Trek 3: The Return of Spock,' I'm a really bad Klingon, and I really enjoyed playing that - somebody who's totally unscrupulous. It's like he was not genetically equipped to feel compassion or sensitivity. Just outright evil without apology.

I don't remember that I ever really went all out to come up with a costume or a persona that could compete with everyone around me. I didn't know what to do. I found Halloween scary for just that fact - it meant that I had pressure to get up and be scary, makeup and all that. That was pretty horrifying for me.

There's something overwhelming about being in raw nature. It's got an aura about it is that is really kind of majestic and spiritual.

Uncle Fester always intrigued me. I certainly always enjoyed his kind of humor. He's just full of mischief in a kind of macabre way. I don't see anything twisted about it. It's sort of ridiculous and wacky. It's sort of fun.

One of the things I like and appreciate a lot is when somebody will come up to me and tell me how much Judge Doom terrified them as little children when he takes the shoe and puts it in the dip. They were literally scared out of their minds. I love that.

Doc Brown had a feverous imagination. He was constantly coming up with new ways and solutions to various issues, and time travel was one of them. I was just very inspired by being able to portray somebody of that sort. He's a man of tremendous energy and excitement about discovery.

I started in theatre when I was 13 or 14 years old and did a lot of theatre until my early thirties. Off-Broadway stuff - off-off-off-off-Broadway stuff - and I do love it.

I would love to do Doc again, no question. It's tough to come up with an idea that contains the excitement of the original three. So it would be a real challenge for the writers to come up with an original 'Back to the Future' story that has the same passion and intensity and excitement as the other three. But it could be done. You never know.

I get asked a lot what the key is to creating a hit show, and I have a standard answer: Do everything right, and then get lucky 10 ways.