In the movie Real Steel, a boy named Max salvages an obsolete sparring robot called Atom and, with the help of his father and the father's mechanic/girlfriend, restores it to working condition. Shortly thereafter, Max goes jogging with Atom, has it pick him up, and asks "Can you understand me?"
The robot, though it has no audio circuitry that we know of at this point of the movie, nods.
The issue is never mentioned again.
What on earth does Atom's nod signify? Is the robot sentient? Is it psychic?
The scene takes place at 45:43. Max asks the robot "Can you understand me?" It responds with an ambiguous noise and a slight nod. It does not appear as though Max has triggered this with any nod of his own. "Don't worry," Max continues, "your secret's safe with me."
Later in movie, during the climactic fight with the robot Zeus, it seems as though Atom responds to Max's entreaties to get off the mat, though Max was not wearing headphones or a control mic at the time.
Atom seemed to be looking at himself in the mirror when left alone before entering to fight with league robot "Twin City".
Atom's head was bent, as though in sadness, when Charlie looked him through the rear view mirror of the car after he left Max.