Eric Stoltz was the first Marty McFly. So weird to see the wrong actor in those scenes.

Here’s a movie idea: two 45-minute films, as identical as possible in setting, costume, lighting, framing, tone, etc. but with a different set of lead actors. Not too many, maybe 1-5 switched out. Film them as contemporaneously as possible. Screen’em back-to-back. Anyone ever done this?