Majel Barrett in Star Trek

I just looked up some info about Majel Barrett and relized that she had a role in Star Trek. Here is the blurb from Wikipedia :

Star Trek

Majel Barrett has been in every incarnation of the popular science fiction Star Trek franchise. She first appeared in Star Trek's initial pilot, "The Cage", as the USS Enterprise's unnamed First Officer, "Number One". Barrett is said to have been cast as Number One in part because of her romantic involvement with Roddenberry. The idea of having an otherwise unknown woman in a leading role with a position of authority, because she was his girlfriend, is said to have infuriated NBC network executives who insisted that Roddenberry give the role to a man. In Star Trek Memories, which he dictated to Chris Kreski, William Shatner corroborated this, but he added that female viewers at test screenings hated the character as well. Shatner notes that women viewers felt she was "pushy" and "annoying" and also thought that "Number One shouldn't be trying so hard to fit in with the men. Restrospect [today], it would seem, is not always pleasant."

Her role in subsequent episodes of Star Trek was altered to that of Nurse Christine Chapel. In an early scene in Star Trek: The Motion Picture, viewers are informed that she has now become Doctor Chapel, a role which she reprises in Star Trek IV: The Voyage Home. Barrett provided several voices for Star Trek: The Animated Series, including those of Nurse Chapel and the communications officer M'Ress, the felinoid (more properly ailuroid) Caitian who served alongside Uhura. Years later, she would return in Star Trek: The Next Generation, cast as the outrageously self-deterministic, iconoclast Betazoid Ambassador Lwaxana Troi. Barrett, as Troi, would also later appear in several episodes of Star Trek: Deep Space Nine.

She also provided the regular voice of starship onboard computers for Star Trek: The Original Series, Star Trek: The Next Generation, Star Trek: Deep Space Nine, Star Trek: Voyager, and most of the Star Trek movies. She reprised her role as a shipboard computer voice in the two episodes of the prequel series Star Trek: Enterprise that involved an earlier time period – a century before the time of Kirk and Spock aboard the USS Enterprise NCC-1701. She has also lent her voice to various computer games and software related to the franchise.

As a result of her providing the computer voice in the Enterprise episode "In a Mirror, Darkly", Barrett became the first and only actor to participate in all six Star Trek TV series, as well as in both the TOS and TNG film series.