Samuel "Sam" Vimes is a policeman from Terry Pratchett's Discworld series. His full name and title is His Grace, The Duke of Ankh, Commander Sir Samuel Vimes. Other titles used occasionally are His Excellency, Ambassador for Ankh-Morpork, as well as Blackboard Monitor Vimes. He first appeared in the novel Guards! Guards!. While no detailed description of his physical appearance shows up in any of the Discworld novels, Pratchett says in the companion work, The Art of Discworld, that he has always imagined Vimes as British actor Pete Postlethwaite. Artist Paul Kidby, who has collaborated with Pratchett on several works, portrays him as resembling Clint Eastwood.