Nerd Machine Brings Nerd HQ to San Diego

Convention too crowded? Head outdoors

Zachary Levi hosts a Nerd HQ panel at Petco Park.

Not all the action in San Diego is taking place in the city's convention center. Just a short walk away at Petco Park, Nerd Machine is hosting Nerd HQ, a free extravaganza that's also a hotbed for experiential marketing.