Robinson is a reference to the classic movie The Graduate. Robinson was a teacher who had an affair with a former student named Benjamin. In "Let's Kill Hitler", River says, "Hello Benjamin." I love them so much :D<<<oh river
River and the Doctor - I love the way he circles her in this scene. He's like "Yeah, I know what's up. Psh, I'm the Doctor." And River just laughs like "Oh you silly boy, you have NOOO idea what is going on.but I do like the bow tie.