Kristoffer Polaha (born February 18, 1977) is an American actor. He starred as Nate Bazile in Life Unexpected. He has a recurring role in Mad Men as Carlton Hanson, the neighbor of the series main characters Don and Betty Draper. He went on to star in the CW series Ringer as Henry Gallagher. He had previously starred in the Fox series North Shore and ABC's mid-season replacement series, Miss Guided. He has also appeared in the Fox series Tru Calling and the supernatural drama Angel.