Throw It In: In the development of Episode 1, one of D0G's default animations played inadvertently during a scripted scene. It was so fitting that they hard-coded him to do it and wrote Alyx's dialog around it.
Alyx Vance: Well, Gordon... unless you have a better suggestion... He is a robot. He's done the math.
Alyx Vance: *to D0G* You did do the math, right?
*D0G sheepishly shakes his head*