Mark Moses is an American actor. His acting career began in the 1980s. During his career start, he had roles in the films Platoon and Someone to Watch Over Me. In the 1990s, he landed his first starring role on television as Richard Peyton in Grand. He next starred in the show The Single Guy. On the big screen, he appeared in Dead Men Don’t Die and portrayed Jac Holzman in The Doors. He later had performances in the features Gettysburg, Just in Time, and Deep Impact. In the 2000s, he became widely known for playing Paul Young in Desperate Housewives. He later played Herman “Duck” Phillips in Mad Men. In the 2010s, he had notable roles in such shows as The Killing, Manhattan, Homeland, and The Last Ship.