Thomas Stewart "Tom" Baker (born 20 January 1934) is a British actor and comedian. He is best known for playing the fourth incarnation of the Doctor in the science fiction television series, Doctor Who, a role he played from 1974–1981.
In Middle-earth, Bilbo Baggins is convinced by the wizard Gandalf the Grey to accompany thirteen dwarves, led by Thorin Oakenshield, on a quest to reclaim the Lonely Mountain from the dragon Smaug.