"There's something very familiar about all this." - BIFF TANNEN, AGED 77
Roger Ebert defined a sequel as "a filmed deal," and it's amazing how accurately the truly odd Back to the Future Part II reflects that definition. The supplemental materials on the movie's DVD are surprisingly candid in laying out why the movie exists and why it took the form that it did. When the first Back to the Future was released in 1985, it was anything but a sure thing. The film's star, Michael J. Fox, was not a household name yet, and the film's co-creators (Robert Zemeckis and Bob Gale) had failed to attain mainstream success with their two previous films, I Want to Hold Your Hand and Used Cars. Worse yet, the Zemeckis/Gale-scripted 1941, directed by Steven Spielberg, had been a financial disaster for Universal Pictures. So another Zemeckis/Gale comedy with Spielberg as producer was a risky proposition. In fact, the film could easily have turned out to be another embarrassing boondoggle for Universal.
But, of course, the first film was a massive worldwide hit, the top-grossing American film of 1985. A sequel was inevitable, and Universal informed Zemeckis and Gale that one would happen whether they were involved or not. So they were now "locked in," so to speak, as were most of the members of the first film's cast. Strangely, though, it was the holdout of one of the supporting players, Crispin Glover, that provided the catalyst for the sequel's plot in which his character (loveable nerd George McFly) is mysteriously killed off, creating another "time travel" problem for the heroes, Doc and Marty, to solve.