Anyhoo - I'd like to nominate Patricia Tallman. She not only played a number of 2ndary and tertiary characters, she stunt-doubled for the female characters... Plus she's a hot redhead.
http://www.imdb.com/name/nm0848191/?ref_=fn_al_nm_1
Acting roles:
Star Trek: The Next Generation
– Timescape (1993) … Alien #2 (uncredited)
– Starship Mine (1993) … Kiros
– Power Play (1992) … Security Officer (uncredited)
Star Trek: Deep Space Nine
– The Muse (1996) … Nurse Tagana (uncredited)
– The Way of the Warrior (1995) … Weapons Officer
– Battle Lines (1993) … Nima (uncredited)
Star Trek: Voyager (TV series)
– Favorite Son (1997) … Taresian Woman (uncredited)
Stunt Double gigs:
Star Trek: The Next Generation
– Suspicions (1993) (stunt double: Gates McFadden - uncredited)
– The Next Phase (1992) (stunt double: Michelle Forbes - uncredited)
– The Outcast (1992) (stunt double: Melinda Culea - uncredited)
Star Trek: Deep Space Nine
– What You Leave Behind (1999) (stunt double: Louise Fletcher - uncredited)
– A Simple Investigation (1997) (stunt double: Dey Young - uncredited)
– Melora (1993) (stunt double: Daphne Ashbrook - uncredited)
– Invasive Procedures (1993) (stunt double: Nana Visitor - uncredited)
– In the Hands of the Prophets (1993) (stunt double: Robin Christopher - uncredited)
Star Trek: Voyager
– Persistence of Vision (1995) (stunt double: Carolyn Seymour - uncredited)
– Heroes and Demons (1995) (stunt double: Marjorie Monaghan - uncredited)
Star Trek: Generations (fight double: Gwynyth Walsh - uncredited, stunts, water fall stunt double: Gates McFadden - uncredited)