Stolen: Paul Cezanne, "Auvers-sur-Oise"
Location: Oxford, England
Year: December 1999
Worth: $5.1 Million

This past New Year's you might've popped bottles but we're guessing you didn't make off with a $5 million painting. In 1999, the Ashmolean Museum at Oxford was hit hard. Using scaffolding around a newly built library wing, professionals climbed on the roof at the world's first university museum and broke through a skylight. Instead of turning off the security system, they opened smoke canisters to set off fire alarms. They took one painting, ignoring everything else, and bounced. No demands of ransom and no efforts to sell instigated rumors that the piece was stolen to order.