Mark starred on Life With Bonnie and has guested on such TV series as 24, For Your Love, Veronica's Closet, Cybill, Party of Five, and Touched by an Angel. His feature films include The Minus Man, Evil Obsession, and Ballad of the Nightingale with Virginia Madsen. But he's known best for creating the role of Ben Davidson on One Life to Live. His other daytime TV credits include playing Adrian Hunter on "The Young and the Restless" (1989-90) and A.C. Mallet on Guiding Light (1990-93); that role nabbed him the 1993 Soap Opera Digest Award for Leading Man and a Daytime Emmy nomination for Lead Actor in 1992. Mark moved to California after he left Guiding Light, and he still lives in L.A. In 2008, Mark worked with Ernie Hudson (aka Dr. Ken Fields on Secret Life) in the film Balancing the Books (unrated). Most recently, Mark shot a cable drama entitled Anatomy of Hope, directed by Lost creator and Star Trek director J.J. Abrams, and a chess movie called Mate (not yet rated).