Trevor Einhorn is an American actor. He first became known for his recurring role as Frederick Gaylord Crane on the sitcom Frasier. Following this, he guest starred on another sitcom, Two Guys and a Girl. At the same time, he starred as Joey Thomas in the 1998 movie BASEketball. In the 2000s, he was known for his role as Henry Walker on Sons & Daughters. He later guest-starred as Justin Polznik in an episode of The Office. More recently, he appeared as John Mathis on Mad Men. Following this, he played Neil Kellerman in ABC’s remake of Dirty Dancing. As of present, he plays Josh Hoberman on the Syfy series The Magicians.