Although Back to the Future’s ending was always oddly dark, the story only gets creepier the more I think about its ending. Back to the Future’s ending is undeniably clever in terms of how the sci-fi comedy sidesteps the complications of time travel by jumping straight into the next big twist. Doc Brown arriving from the future and telling Marty that “Something’s gotta be done about your kids!” leaves viewers with no time to really think about how Back to the Future’s timelines add up.