4. The Dummy - A Clever Dummy (1917)
Ben Turpin plays a postman who sees the object of his affection every day on his route. One day he discovers that some mechanics a remaking a robot dummy that surprisingly enough looks exactly like him. Hijinks ensue.
Estimated chance you've seen this one: 0% - This one is my crowning glory. There is NO WAY you've seen this robot, but you can watch it here.