Wikimeme! Ganked from everybody and their dog. Three events, two births, and one death on November 23rd.

Events:
1499 - Pretender to the throne Perkin Warbeck is hanged for reportedly attempting to escape from the Tower of London. He had invaded England in 1497, claiming to be the lost son of King Edward IV of England.
1890 - King William III of the Netherlands dies without a male heir and a special law is passed to allow his daughter Princess Wilhelmina to become Queen.
1963 - The first episode of the science fiction television series Doctor Who debuts on the BBC.

Births:
1860 - Billy the Kid, American bandit (d. 1881)
1887 - Boris Karloff, British actor (d. 1969)

Death:
1990 - Roald Dahl, British author (b. 1916)