Gates McFadden from Star Trek: The Next Generation, and John Billingsley from Star Trek: Enterprise discusses their experiences working on Star Trek and other projects with a room full of fans at the 2017 Ottawa ComicCon.
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Cheryl Gates McFadden (born March 2, 1949), often worked in Jim Henson productions,  Labyrinth (as director of choreography and puppet movement), The Muppets Take Manhattan (choreographer and a brief on-screen appearance), and uncredited work on Dreamchild (again supervising choreography and puppet movement). As a way of distinguishing her acting work from her choreography, she is usually credited as “Gates McFadden” as an actress and “Cheryl McFadden” as a choreographer. However, she was credited as “Cheryl McFadden” in the Troma movie When Nature Calls (1985) and in the season-three episode of The Cosby Show, “Cliff’s 50th Birthday”. She appeared in The Hunt for Red October as Jack Ryan’s wife Caroline, though most of her scenes were cut in post-production.
John Billingsley (born May 20, 1960), made an appearance in “It Happened in Juneau”, a third-season episode of the TV comedy-drama Northern Exposure, playing a patient treated by Marilyn. Billingsley made an appearance in the The X-Files episode entitled Three of a Kind, playing a friend of the Lone Gunmen who turns out to be a government spy. He played Dr. John Fallow in The West Wing episode that featured the Gall–Peters projection map (season 2, episode 16). He was cast in the role of Professor Miles Ballard in the short-lived television series The Others and then as the Denobulan Doctor Phlox in the fifth live action Star Trek series, Star Trek: Enterprise, which ran for four seasons. He also played himself in an episode of Roswell that used the Enterprise set. He also starred in the independent film Breathing Hard (2000) in the same year. In 2002, he was a guest star in an episode of Stargate SG-1, playing a scientist who is also a Trekkie, “worship[ping] at the altar of Roddenberry”. He also had a sizeable role as Denzel Washington’s coroner friend in the 2003 film Out of Time.