Lea Thompson in Back to the Future (1985)

Crispin Glover in Back to the Future (1985)

Michael J. Fox and Christopher Lloyd in Back to the Future (1985)

Michael J. Fox, Crispin Glover, and Lea Thompson in Back to the Future (1985)

Michael J. Fox and Granville 'Danny' Young in Back to the Future (1985)

Christopher Lloyd in Back to the Future (1985)

Michael J. Fox in Back to the Future (1985)

Michael J. Fox and Lea Thompson in Back to the Future (1985)

Director Robert Zemeckis and Michael J. Fox on the set

Michael J. Fox and Robert Zemeckis in Back to the Future (1985)

Dolly Parton, Sandy Gallin, and Barry Diller at an event for Back to the Future (1985)

Claudia Wells in Back to the Future (1985)

Michael J. Fox, Crispin Glover, Christopher Lloyd, Lea Thompson, and Tom Wilson in Back to the Future (1985)