Steven Spielberg Likens ‘Back to the Future’ to ‘Taste of Buttered Popcorn’ in ‘Back in Time’ Trailer (Video)

Documentary chronicling Michael J. Fox film drops on Oct. 21, 2015 — the same date he went to the future in sequel

Michael J. Fox Back in Time

The trailer for “Back to the Future” doc “Back in Time” has the film’s current-day cast, crew and famous fans reminiscing about the movie that defined their shared past — and a generation.

For starters, star Michael J. Fox recalls a premiere event where Princess Diana was seated directly next to him: “I’m like a fake yawn and an arm-stretch away from being on a date with the princess of Wales,” he remembered.

Steven Spielberg called it the best time-travel movie ever, opining: “Lightning in a bottle tends to stick around for a long time.”

Later the executive produced offered up another soundbite: “The movie defines the taste of buttered popcorn.”

The film also features new interviews with writers Robert Zemeckis and Bob Gale, Lea Thompson, Dan Harmon, Joe Walser, Christopher Lloyd, Alan Silvestri, Adam F. Goldberg, Terry & Oliver Holler and Bill and Patrick Shea, among others.

“Back in Time” zooms into theaters on Oct. 21, 2015 — the same date that Marty McFly (Fox) heads to in futuristic the second movie. Look for 4:29 p.m. screenings:

Back to the Future dates

Watch the trailer: