Satoshi Nakamoto!
If only the submission form didn't require so much information that's not known about Satoshi. It's kind of funny how a nomination for the champion of modern privacy requires that the nomination and the person doing the nominating provide their name, email address, and other contact information. Not entirely private, eh?
Maybe it's a "smart" move by authorities to expose the location of such defenders of freedom across the globe. I'd nominate Julian Assange since everyone knows exactly where to find him anyway