16.

E.T., specifically:
when Gertie sees E.T. for the first time and E.T. runs screaming across the room with his arms straight up in the air.
when Gertie dresses E.T. like a lady and says "I taught him how to talk. He can talk now."
when Elliott and E.T. fly for the first time.
when Elliott thinks E.T. is dead and says "I'll believe in you all my life."
when E.T. comes back to life and Elliott has to zip him back in the bag while he's saying "E.T.E.T.E.T." over and over again.
when the "bike gang" starts up.
when the "bike gang" lands in the woods in a row.
when E.T. hugs Elliott good-bye and grasps at the back of Elliott's red sweatshirt with his long alien fingers.