Saul Hersh Rubinek is an actor, director, producer, and playwright. He is best known for his television roles, as Artie Nielsen on "Warehouse 13," Donny Douglas on "Frasier," Lon Cohen on "A Nero Wolfe Mystery," and Louis B. Mayer on "The Last Tycoon." He also appeared in the films "Against All Odds," "Wall Street," "The Bonfire of the Vanities," "Unforgiven," "Nixon," "True Romance," "The Express," "Barney's Version," and "The Ballad of Buster Scruggs."Rubinek started his professional career as a child actor in theater and radio. He has been a stage actor and director, working with the Stratford Shakespeare Festival and Theatre Passe Muraille, and co-founding the Canadian Stage Company.