René Magritte gets my vote.
Oh give me a break. Could there be a surrealist more surreal than one Mr. Salvador Dali? He has a country named after his surname, and a record-breaking Broadway musical that has been transformed into a film vehicle for the talents of one Mr. Walter Matthau named after his second name. I’d like to see Mr. Magritte top that, if he wouldst dare to attempt such a feat.