We say “Project Natal,” you say “Xbox motion control camera doohickey,” right? In theory, it’s a gamer’s geekiest dream come true. You throw a punch, and your character on screen follows suit. Buttons? What are those? Soon, you could be hugging Gordon Freeman’s crowbar and fending off headcrabs with your own two hands. Fallout 3 production director Ashley Cheng, however, thinks Natal’s true potential lies far outside the realm of videogames.