Ming-Na Wen (Aanes/Zee)

Also known as "Ming-Na" or "Ming Wen", she has one of the more distinctive voices in the business, as shown by the extensive amount of animation voice-over work she's done in both tv and film!
Ming's demonstrated her acting chops in The Joy Luck Club and ER and her action prowess in the first Street Fighter film and Push (which is, ironically, opening shortly before the new Street Fighter film debuts).
Note: I complained about her lack of fighting ability in Street Fighter, but she has improved, as shown by her performanaces in Vanished and Push!
UPDATE: Ming's been cast as Agent Melinda May in Joss Whedon's S.H.I.E.L.D. TV pilot!

Genre credits include...
Agents of S.H.I.E.L.D. (Agent Melinda May)
StarGate Universe aka SGU (Camille Wray)

Push (Emily Hu)
Prom Night[2008] (Dr. Elisha Crowe)
Vanished (Agent Lin Mei)
Kingdom Hearts II[VG] / Mulan II/ Mulan/ House of Mouse (Fa Mulan)
The Batman (Detective Ellen Yin)
Spawn 3: Ultimate Battle/ Todd McFarlane's Spawn(Jade / Lisa Wu)
Final Fantasy: the Spirits Within/ Aki's Dream (Dr. Aki Ross)
Street Fighter/ Street Fighter the Movie[VG] (Chun-Li Zang)
Vanishing Son II / Vanishing Son IV (Mai)
StarQuest aka Terminal Voyage aka Star Voyager (Han)

Check out..
Ming-Na's Official Site
Ming-Na on Twitter

Other actress to play Fa Mulan:
Lea Salonga performed all of Mulan's singing to Ming's voice acting in the various Mulan films.
Other actresses to play Chun-Li include:
Kristen Kreuk in Street Fighter: the Legend of Chun-Li
Chingmy Yau in Future Cops
(and, no, I'm not going to list all the actresses who did voice work for Chun-Li's anime and video game appearances. You can Google them...)

Alexandra L Doig (Shanks)

It's interesting how many actresses end up doing primarily genre work.
Lexa Doig, seems to pop up as a regular or semi-regular in most of the genre series produced in Canada since 1996!
Not that I'm complaining, mind you! If it wasn't for her, I wouldn't have bothered with Andromeda after the first season...

Genre appearances include...
V [2010] (Dr Leah Pearlman)
FireBall (Ava)
Ba'al the Storm God(Pena)
Eureka(Dr. Anne Young)
Stargate SG-1(Dr. Carolyn Lam)
The 4400(Wendy Paulson)
Jason X(Rowan)
Gene Roddenberry's Andromeda
(Image / Voice of Andromeda Ascendant [the ship],
Rommie the android avatar,
and several other android avatars)
Earth: Final Conflict"Abduction"
FX: the Series "French Kiss"
CI-5: the New Professionals(Tina Backus)
Teen Sorcery (Mercedes)
Second Sight (Jenny Morris)
Flash Gordon[1996, animated] (Dale Arden)
JungleGround(Spider)
Human Cargo (Rachel Saunders)
Tracker (Kim Chang)
Killer Instinct (Doctor)
While My Pretty One Sleeps (Tse Tse)
TekWar: the Movie, TekLords, TekWar: the Series(CowGirl)
No Alibi (Camile)
The Hidden Room "Marion & Jean"

Other actresses to play Dale Arden include...
Jean Rogers: Flash Gordon[1936] / Flash Gordon's Trip to Mars[1938]
Carol Hughes: Flash Gordon Conquers the Universe[1940]
Irene Champlain: Flash Gordon [1954-55]
Diane Pershing: Flash Gordon: the Greatest Adventure of All / Flash Gordon[1979-81]
Melody Anderson: Flash Gordon [1980]
Gina Holden: Flash Gordon[2008]
I've been unable to ascertain who played Dale in radio's the Amazing Interplanetary Adventures of Flash Gordon. I've found credits for three different actresses, and until I can confim the info, I'll leave it open...