Jack Black + Emile Hirsch — Dead Ringers?

So, you know how Olivia Wilde used to sex up Emile Hirsch in 'Alpha Dog' back in the day? Well, when we first saw that scene, we thought she was with Jack Black and were like, "Woah! No way! The lucky bastard!"

On the double take, we still had the same reaction but were instead blown away by the similarities between the two actors. But the fact that Hirsch could definitely be Black's younger self is still overshadowed by one pressing question: How is Hirsch's character not able to "perform" with someone like Olivia Wilde? Crazy, right?