We don't know his real name. We don't know who he was before he stole the TARDIS -- a spaceship/time machine that looks like a police box on the outside, but is really a cavernous ship on the inside. He's thousands of years old, but wears a different face every few years. He calls himself The Doctor, but Doctor who? In the first of my three part series, I look at how a restless intergalactic time traveller became a global pop culture icon, and why The Doctor's knack for physical regeneration resonates with fans on a more personal level. (Part 1 of a 3-part mini-series)
