(written from a Production point of view)
Musetta Vander (born 26 May 1963; age 54) is the actress who portrayed Derran Tal in the Star Trek: Voyager fifth season episode "The Disease". She filmed her scenes on Wednesday 11 November 1998 and between Friday 13 November 1998 and Wednesday 18 November 1998 on Paramount Stage 8, 9, and 16. Her costume was later sold off on the It's A Wrap! sale and auction on eBay. 
Other television series on which she has appeared include Boy Meets World, Highlander, Buffy the Vampire Slayer, Xena: Warrior Princess, Stargate SG-1, Babylon 5, and Frasier, the latter of which starred Kelsey Grammer. She also appeared with Kate Mulgrew in an episode of Murder, She Wrote (1994).
Vander was featured on the short-lived sci-fi television series Super Force (with Ken Olandt), and also occasionally as Prima on UPN's short-lived spy series Secret Agent Man with cast-regular Dina Meyer.
Vander has additionally appeared in several films. She played the role of Lash in the 1994 science fiction adventure Oblivion and its sequel, Oblivion 2: Backlash in 1996. Fellow Star Trek alumni George Takei, Meg Foster, Julie Newmar, Carel Struycken, and Jimmie F. Skaggs also starred in these films. Her other film credits include Project: Metalbeast (1995, with Diaunté, Brian Brophy, Carole Davis, Brioni Farrell, John Marzilli, and Chuck Picerni, Jr.), Under the Hula Moon (1995, also with Carel Struycken), Mortal Kombat: Annihilation (1997, with Brian Thompson), Gunshy (1998, with John Fleck), Molly (1999, with Brian George, Robert Harper, Vinny Argiro, and Athena Massey), Wild Wild West (1999), O, Brother, Where Art Thou? (2000, with Stephen Root), The Cell (2000), and Kicking & Screaming (2005, with Rachael Harris, Matt Winston, and Tom Virtue).