Hal Holbrook is an American actor who has been active in the entertainment industry since the 1950s. He is best known for his role as Mark Twain in the one-man show, 'Mark Twain Tonight!', which he has performed over 2, 000 times. He has also appeared in films such as All the President's Men, The Firm, and Into the Wild. Holbrook won an Emmy Award for his performance in the television miniseries, 'The Bold Ones: The Senator'. He was also nominated for an Academy Award for his performance in the film, 'Into the Wild'.