Olivia d'Abo has had a repeated role on "Law & Order: Criminal Intent" as a sociopathic criminal. She is one of the few people who managed to go toe-to-toe with Detective Goren.

This week I got to see her in the made-for-TV movie "Triangle" in which she was a very lovely (in a bikini) first mate.
A look at her website shows that she's been in TV and the movies since 1984. Her first role was Princess Jehnna in Conan the Destroyer. Wikipedia says she will be playing the ex-wife of Sheriff Jack Carter on Sci-Fi Channel's Eureka. Time to program the TIVO!
Damn I'm impressed...