Mark Saul

Mark Adam Saul (born June 20, 1985) is an American actor who is best known for appearing on the popular Nickelodeon show ''All That'' in the final two seasons of the show's first era. His other notable credits include ''The Social Network'', ''Parks and Recreation'', ''Rules of Engagement'', ''Bones'', ''Desperate Housewives'', and ''Body of Proof''. He also portrayed Dr. Steve Mostow in ''Grey's Anatomy'' from seasons 4 to 8. Provided by Wikipedia