www.googlebattle.com
Jesus barely ekes out the win over george bush, but he has it easily over george w. bush. But if you switch it to Jesus Christ or Jesus of Nazareth, dubya gets the win.
Too lazy to check a lot of them, but Santa > Jesus > Bill Gates > Michael Jordan > Bill Clinton > Tiger Woods > Muhammad Ali > Michael Schumacher > David Beckham > Yao Ming
Obviously this site doesn't give a perfectly fair means of comparison, but the results are interesting nonetheless.