(written from a Production point of view)
Cully Fredricksen (born 1958; age ~63) played the part of the Vulcan captain in Star Trek: First Contact. He appeared as Dereth in the Star Trek: Voyager first season episode "Phage". Archive footage from his Star Trek: First Contact appearance was later reused in the Star Trek: Enterprise fourth season episode "In a Mirror, Darkly".
Fredricksen once guest,starred in the short-lived series Live Shot. Other Star Trek stars who were cast members include David Birney, Karen Austin, Ron Canada, Jeff Yagher, Bruce McGill, and Sam Anderson, Casey Biggs, Chase Masterson, Dion Anderson, John Schuck, Lee Arenberg, Hal Landon, Jr., and Kenneth Tigar.
More recently, Fredericksen was the voice and likeness of the Jedi Rahm Kota in the video game Star Wars: The Force Unleashed, as well as its 2010 sequel; Sam Witwer portrayed the protagonist, Galen Marek, providing the voice of Emperor Palpatine as well.