Most Influential Person. . .

I think a good argument can be made for Gutenberg. Ignoring for right now the impact of the Gutenberg Bible, the printing press did have far reaching effects on human culture. The printing press gave the poor access to reading materials and increased literacy among the peasantry. Perhaps even the Renaissance and Reformation would not have occurred without the printing press. Imagine if only the nobility and priests were literate when Martin Luther posted his note on the church doors. Even Yoda would say, "Hmmm, Important he was."