Here's the concept art that inspired the robot from the year's best sci-fi movie

Artificial Intelligence has become a popular topic in movies recently, ranging as far in themes from gun-toting Chappie to the lovable Baymax in "Big Hero 6." But "Ex Machina," opening in limited release Friday, features an AI so realistic that you'll be thinking about it long after the credits roll. "Ex Machina" is the directorial debut of Alex Garland (best known for writing "28 Days Later" and "Dredd") and follows young programmer Caleb (Domhnall Gleeson) who is invited to stay with Nathan (O...