The legendary Star Trek actor recalls his fear of being on stage with “no lines.”

Is a documentary aboutWilliam Shatnerhis real-life final frontier?

“I was two days in front of a camera for many hours each day,” Shatner said.

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“So talked a great deal about a subject I know a little about: That’s me!

Why did Shatner think this was the appropriate time to collaborate on such a project?

“So the older I get, the more I think maybe I should record some thoughts.”

“[I was told] ‘No, no, it’s 15,000 people in a hotel.’

My biggest fear was making a Freudian slip!

You say something inadvertently which may be a little more revealing than you want it to be.”

Watch video above for more from Shatner.