What�s really challenging about playing a science-fiction role?

Encouraging people to believe in it was the most important thing of all. It�s one of the reasons why I was always uncomfortable whenever film crews came on the set to shoot things. I didn�t want our make believe to be exposed.

I got into trouble once with the studio for walking off a set when I think it was Good Morning America was going to shoot their segment from our sets and I had been very reluctant to participate in this and in fact I thought it was a bad idea.

I didn�t want to have newsreaders and people sitting around on our sets, but they were all together interviewing the cast and it was thought to be good promotion for the show and I got a promise from them that they would be serious about it.

Then when I arrived I found that they�d worked out stunts with guys in funny heads - and I objected to it because I thought that it was undignified.