Back to the Future: Back to the Future
Physics → Static Electricity → Lightning
Doc helps harness the power of a lightning strike so that Marty can travel back to the future. He struggles to make the connection between the wires of the lightning rod so that the lightning will strike Marty's car. When he finally makes the connection, the wire at the other end unplugs, so he rushes to reconnect it. He manages to reconnect the rod the moment the lightning strikes, sending Marty into the future.