1) Socrates - He taught the world to question everything to get to the truth, and invented modern philosophy.
2) Nietzsche - He taught the world to not only question everything, but to tell everything before to shut the hell up 'cuz it was stupid and wrong, especially Socrates.
3) Buddha - He taught the world to not even question anything, but that all life was suffering and we must discard all desire to truly be enlightened.
4) Feuerbach - Precursor to Nietzsche, wrote that all life was suffering and that the only release was temporary, through music, the greatest of the arts.
5) David Bowie - After all those jerks, somebody finally got it right and made me happy (I guess he proved Feuerbach's theory).
6) Benjamin Franklin - Acted as a guinea pig for one of the world's most important experiments. Yeah, nothing happened and he was fine, but at the time, that was really crazy stuff to risk getting zapped by lightning. If today's scientists cared more about progress than profits the world would be a much better place.
7) Nikolai Tesla - He shot lightning out of his hands and invented wizards.
8) The Beatles - John, Paul, George, and Ringo, but I probably prefer them in the reverse order.
9) Shigeru Miyamoto - He invented jumping and secrets and cutscenes.
10) Napoleon - He conquered Europe TWICE, and let women have jobs. He even invented a complex.