Why He Won

I think this pretty much captures the essence of the entire Obama Campaign: Professional Division:

Prologue...Obama is paying a visit to the Googleplex:

The politicians visiting auto plants could control what was said during the event. Today, candidates must place themselves at the tender mercies of the audience. Those who go to Google sit exposed on the stage, without the protective lectern provided in a debate, answering questions for 45 to 60 minutes. But without the escape hatch of a timekeeper’s buzzer, and as the only speaker, the candidate cannot evade uncomfortable questions. Eric E. Schmidt, Google’s chairman and chief executive, for example, asked Senator Obama for his views on Iran, Pakistan, and Guantánamo — and that was a single question.

Fine. But then, Act Two: A Sudden Turn:

Mr. Schmidt asked [...] “How do you determine good ways of sorting one million 32-bit integers in two megabytes of RAM?” [Obama replied] “A bubble sort is the wrong way to go” [...] the quip brought down the house.

And that, my friends, is a prepared candidate.