1911: Jack Daniel, founder of the famous Tennessee whiskey distillery, died of blood poisoning from a toe injury he received after kicking his safe in anger when he could not remember its combination code.
1953: Frank Hayes, jockey, suffered a heart attack during a horse race. The horse, Sweet Kiss, went on to finish first, making Hayes the only deceased jockey to win a race.
1978: Georgi Markov, a Bulgarian dissident, was assassinated by poisoning in London by an unknown assailant who jabbed him in the calf with a specially modified umbrella that fired a metal pellet with a small cavity full of ricin poison.
1981: A 19-year-old man named Jeff Bailey died of a heart attack after scoring 16,660 on the arcade game Berzerk. This was the first known instance of a video game-related death.
Other unusual ways to die at this Wiki