People really want to say Obama. They probably think Bush was dumb. It can't be Obama. It could be Osama.
ADDED: And here's the BBC's list of people who defined the decade:
David BeckhamBush isn't even on it.
L/Corp Johnson Beharry
Osama Bin Laden
Tony Blair
George W Bush
Shami Chakrabarti
Simon Cowell
Roger Federer
Norman Foster
Stephen Fry
Bill Gates
Jade Goody
Brian Haw
Rupert Murdoch
Barack Obama
Jamie Oliver
Larry Page and Sergey Brin
David Tennant
Jane Tomlinson
Jimmy Wales
ADDED: Oops! How dare they bamboozle me with alphabetical order!!!