Nerd Icon: Steve Wozniak of Apple

Apple co-founder Steve Wozniak--affectionately known as "The Woz"--knows the power of a good beard. It's why facial hair has become part of his signature style, like Gandalf from The Lord of The Rings, a beard is a sign of a guy who has seen things and accrued much wisdom from his experiences, whether it's knowing his way around a motherboard or a guy who has slain many Orcs in his day.