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Patrick Troughton played the second incarnation of the Doctor in the BBC science fiction series Doctor Who. He starred in the role from 1966 to 1969. He made his final appearance in the 1983 anniversary special, The Five Doctors. The special marked the 20th anniversary of the series and featured five different Doctors: Troughton, William Hartnell, Jon Pertwee, Tom Baker and Peter Davison.