D is for Dali

Salvador Domingo Felipe Jacinto Dalí i Domènech, 1st Marquess of Dalí de Púbol, known professionally as Salvador Dalí,was a prominent Spanish artist.

He could be extremely surreal in his life as well as through his work. Here's one bizarre example (there are lots to choose from!):

• In 1936, he delivered a lecture titled "Fantomes paranoiaques athentiques" ("Authentic paranoid ghosts") while dressed in a deep sea diving suit, carrying a billiard cue and walking a pair of Russian wolfhounds. Apparently he nearly suffocated during the presentation, as Dalí had to be rescued by the young poet David Gascoyne, who arrived with a spanner to release him from the diving helmet.