Richard P. Feynman
Serious though, my choice would have to be Richard Feynman. A brilliant Nobel Prize winning physicist who lived an incredibly interesting life. The book, "Surely you're joking, Mr. Feynman" is a must read for anybody that appreciates science or physics.
I'm now de-nerding, all done.
'12 Lib Tech T.rice / '12 Burton Cartels
'10 CustomX / '10 Co2 EST