Terminator 2: Judgment Day
Arnold readies his shotgun, but the only sign of life is a pretty cool burning tire rolling out of the wreckage. He and John speed off. And then, of course, a shiny silver man walks out of the fire, resolving itself into Robert Patrick.
Meanwhile, on the motorcycle, John's had enough and demands that they stop. "Now don't take this the wrong way, but you are a Terminator, right?" Bright kid. It turns out that Arnold is "Cyberdyne Systems Model 101." I think I'll just keep calling him "Arnold."
Arnold allows John to poke him in the face to show that he's real. And then, showing ever greater restraint, he does nothing as John starts mumbling. "This is intense. Okay, get a grip, John..." Me, I start shooting whenever people start talking to themselves and using their own names. It's just creepy. John has noticed that Arnold isn't here to kill him but to protect him. "Who sent you?" he asks. Arnold: "You did. Thirty-five years from now you reprogrammed me to be your protector here. In this time."
Later that night, still on Arnold's motorcycle, it's time for more exposition about how Robert is more advanced and is made of liquid metal. Arnold won't let John go back home, because the T-1000 (that's Robert) would try to "reacquire him" there. Foster Mom and Foster Dad, when reached on the phone, sound a little strange. Arnold imitates John's voice and, through the clever ruse of getting the dog's name wrong, discovers that John's foster parents are dead. He breaks the news gently, though, turning to John and saying, "Your foster parents are dead." It turns out that Foster Mom's hand had turned into a huge blade off screen, poking right through Foster Dad's head. She morphs back into Officer Robert and we're done with the foster home.