Adrien Cho was the producer in charge of the artists for BioWare’s epic Mass Effect 2 video game, which debuted on Tuesday and has sold more than 2 million copies on the Xbox 360. We interviewed him about the art style of the science fiction game, which features close-up animations of humans and aliens talking. The game tries to render human faces so the look believable, but in a stylistic way. Of course, the company that really figures out how to do realistic human faces with 3-D animation will likely make a bundle of money and sell lots of games. Here’s our video interview with Cho.