Tyrants collect money and power, but they also amass bric-a-brac like the rest of us. What, if anything, do their material leanings signify?

Possible motives for collecting abound: compulsion, competition, exhibitionism, desire for immortality and the need for experts' approval.

Stephen Anderson, professor of neurology at the University of Iowa, has come closest to finding a biological basis for the yen to collect. In 2004 he showed that damage to an area of the prefrontal cortex can lead to hoarding—the pathological cousin of collecting. Anderson doubts that's the case with the dictators. "Most people who have injuries to this part of the brain are not going to be successful," he says, "even in a bad-guy way." Still, he wouldn't be surprised if the bad guys' neural wiring were somehow amiss.

	The Man: Saddam Hussein The Stash: Sci-fi fantasy paintings featuring menacing dragons and barely-clad blondes.
	The Man: Adolf Hitler The Stash: Bavarian 18th century furniture. Munich antique dealers were ordered to keep an eye out for him.
	The Man: Kim Jong Il The Stash: 20,000 videos (Daffy Duck cartoons, Star Wars, Liz Taylor and Sean Connery flicks)
	The Man: Idi Amin The Stash: Several racing cars and loads of old film reels of I Love Lucy reruns and Tom and Jerry cartoons
	The Man: Joseph Stalin The Stash: Westerns with Spencer Tracy, Clark Gable and John Wayne. Stalin also inherited Joseph Goebbels's films.