Bob Beard is certain there's a nerd inside all of us. Yup, even you. There's no shame in admitting it, he says, since it's more socially acceptable than ever to be a member of the pocket protector brigade or to be a major geekazoid. For proof, look no further than the ever-growing number of people turning out for the annual PBS Nerd Walk in Tempe.

And according to Beard, who founded the Nerd Walk in 2011 and works as a community engagement specialist for Eight Arizona PBS, this year's event on Saturday near Arizona State University's Tempe Campus will have its biggest turnout to date.