(written from a Production point of view)
Lidia Sabljic (born 25 January 1975; age 38), also known as Lidia Mills and Lidia Ryan, is an actress and model who was a regular background performer, a Starfleet officer during the run of Star Trek: Enterprise. In addition she served as stand-in for actress Linda Park in several episodes. Sabljic received no credit for her appearances.
Sabljic was born in Backa Palanka, Serbia. She received her Master's in industrial/ organizational psychology from the DePaul University in Chicago in 1998 and studied acting at the Playhouse West and Actorsite under coaches such as Robert Carnegie, Tony Savant, Saxon Trainor, and Stephen Blackehart.
Among her feature film performances are the comedy The Rest of Your Life (2001), Steven Spielberg's Academy Award nominated drama Catch Me If You Can (2002, with Matthew Kimbrough, Thomas Kopache, Jimmie F. Skaggs, Lilyan Chauvin, Robert Symonds, Robert Curtis Brown, J. Patrick McCormack, Mike Baldridge, Jessica Collins, and Mark Correy), the thriller Mr. Id (2003), and the Academy Award winning fantasy film Lemony Snicket's A Series of Unfortunate Events (2004, with Bob Clendenin and stunts by Katie Rowe and Scott Leva).
Sabljic also played leading roles in the independent films Whack Jack, Size 10½, and Staying, and appeared in several stage plays and comedy sketches on festivals. She is residing in Los Angeles since 2001.
More recently, Ryan portrayed the secretary Delilah in the web series Get a Clue (2007-2008). 
(This list is currently incomplete.)