Quiz

He made a total of eleven guest appearances in Missione impossibile (1966), more than any other guest star.

Along with Majel Barrett, Joseph Ruskin, Clint Howard and Vince Deadrick Sr., he is one of only five actors to appear in both Star Trek (1966) and Star Trek: Enterprise (2001). Of these, he and Deadrick are the only ones who did not also appear in Star Trek: Deep Space Nine (1993).