Pernell Roberts, the last remaining cast member of Bonanza, has died from cancer at age 81. Roberts played the role of Adam, brother of Dan Blocker and Michael Landon, on the smash hit TV series between 1959 and 1965. He felt frustrated that his character was never fully developed and thought it was ridiculous that a man in his 30s would constantly defer to his father's (Lorne Greene) wishes. Like so many other stars who left hit TV series, Roberts' career stagnated for many years. However, in 1979 he was back in a hit, playing the title role of Trapper John, M.D., based on a character from the M*A*S*H TV series. The show lasted until 1986. For more click here