Michael Jackson was voted #1 even though he was never involuntarily admitted to a mental ward.

Case History: Even before her I do/I don't to hometown pal Jason Alexander (never mind Fed-Ex), Spears had been regularly frightening her handlers with Girls Gone Wild antics. Jell-O shots and table dancing graduated to TV breakdowns and panty-free good times with role model Paris Hilton. Nothing could have prepared her fans for the self-inflicted shearing that left her looking like a cross between G.I. Jane and the dude from Powder, and even high-powered lawyers representing her in a sideshow/custody battle with Kevin Federline jumped ship in early '08. Undaunted, she has proven capable of feeding the tabloids with shockers on an almost daily basis. This story is developing, and she is poised to move up a few crazy pegs on this list...

Crazy Moment: Her drunken 55-hour marriage to Jason Alexander? Her sober marriage to Kevin Federline? Her January, 2008 refusal to return custody of her children to Fed-Ex'es bodyguard, resulting in a paramedic-assisted gurney ride to a local hospital? It's a tough call.

She's So Crazy: "I get to go to lots of overseas places, like Canada."

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