On May 2, 2012, Sotheby's auction house in New York puts Edvard Munch's iconic painting, 'The Scream,' on the auction block. The painting up for sale is one of four versions, and the only one still in private hands. Norwegian businessman Petter Olsen currently owns it. Sotheby's estimates it could fetch more than $80 million. (Sotheby's Auction House)