Jack Donner
Jack Donner  was the actor who made his first Star Trek appearance as  in the  third season episode . He filmed his scenes on Friday  at Desilu Stage 9. 

Thirty-six years later, he portrayed the Vulcan priest in the  fourth season episodes  and .

Along with Majel Barrett, Joseph Ruskin, Vince Deadrick, and Clint Howard, he is one of only five actors to appear in both TOS and ENT. He and Deadrick are the only ones of the five who did not appear on .

Career
Early in his career, he was briefly married to actress , with his next marriage was to actress . 

In 1966, Donner, along with Lee Delano, founded the Oxford Theater in Los Angeles, a playhouse and acting school. Their students included , , and .

In addition to Star Trek, some of his other 60s acting roles included The Man from U.N.C.L.E., Mission: Impossible, and Kojak.

After becoming ill in 1977, Donner retired from acting, and studied to be a licensed psychotherapist. After a few years of practice, he returned to acting in 1991. 

Some of his later television roles included  Frasier, Charmed, Buffy the Vampire Slayer, Malcolm in the Middle, and Roswell.

External links 
  – official site
 
 

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Performers
TOS performers
ENT performers