Jeff Corey (born Arthur Zwerling; August 10, 1914 – August 16, 2002) was an American actor, television director, and teacher. After being blacklisted in the 1950s, he became one of the most prominent and influential acting coaches in Hollywood, who's students included the likes of Kirk Douglas, Jack Nicholson, Robin Williams, James Dean, Jane Fonda, Peter Fonda, James Coburn, Leonard Nimoy, Cher, Barbra Streisand and Rob Reiner. He returned to film and television work in the 1960s, playing many character roles. (Via Wikipedia)