Made stage debut in a New Hampshire production of "Our Town"
Served in the U.S. Navy during the Korean War
Cast as one of original members of the CBS soap opera "The Secret Storm"
Created the role of Barnaby in "The Matchmaker" on Broadway; also made Broadway debut opposite Ruth Gordon
Feature debut, small role as a battle victim in "The Proud and the Profane"
TV debut, "Rain in the Morning" episode of "Matinee Theater" (NBC)
Received a Tony nomination for his role in the Broadway play "Say, Darling"
First major film role, recreating stage role of Barnaby opposite Shirley Booth in the film adaptation of "The Matchmaker"
Received second Tony nomination for his role in the Broadway Musical "Take Me Along"
Created the role of J. Pierpont Finch in the Broadway musical "How to Succeed in Business Without Really Trying"
Appeared in the black comedy "The Loved One," a movie that satirized the funeral business in Los Angeles
Reprised role of Finch for the film version of "How to Succeed in Business Without Really Trying"
Appeared in the comedy "Where Were You When the Lights Went Out?" opposite Doris Day
TV series debut as regular, "That's Life" (ABC); received first Emmy nomination
Last film for seventeen years, Disney's "The Boatniks"
Appeared in the original Broadway cast of "Sugar," the musical stage adaptation of "Some Like It Hot"; earned a Tony Award nomination
Joined other performers, including Marlo Thomas, in creating the <i>Free to Be... You and Me</i> children's album
Last appearence on Broadway for a decade, "So Long, 174th Street"
Joined the U.S. touring production of "Sugar Babies"
Returned to features in the comedy "Hunk"
Garnered critical acclaim for his one man stage portrayal of Truman Capote in "Tru"
Recreated his Broadway performance for a PBS adaptation of "Tru"
Played featured role in the ABC miniseries "Wild Palms"
Starred in the Canadian production of "Show Boat"
Portrayed Grandpa in the Fox TV-movie "Here Comes the Munsters"
Cast as Edwin O'Malley on the CBS medical drama "City of Angels"
Played the role of The Wizard in the San Francisco run of the musical "Wicked"; replaced by Joel Grey when it opened on Broadway
Played the recurring role of Bertram Cooper on AMC's "Mad Men"; received an Emmy (2008, 2010) nomination for Outstanding Guest Actor In A Drama Series