Dueling Jennifers - Back to the Future Scene Re-Shot

A more-full report on the 25th anniversary of Back to the Future in Naperville is forthcoming, but one of the things I learned after listening to the "original" Jennifer (Claudia Wells) was that in BTTF 2, they had to re-shoot the opening scene/closing scene from #1 because the actor playing Jennifer changed (Elisabeth Shue in #2).

Some smart person on YouTube has put the scenes together.  Pretty incredible job in re-creating the scene.