The thing is, many of the most iconic pieces of the franchise, especially basically everything from 2015 (the giant video wall, the Reagan-themed diner, flying cars, the hoverboard, the sports almanac) are all from the second film. 1 definitely has its iconic moments, but 2 is almost unarguably the most iconic film in the franchise. The "Bad Present 80's" is all kinds of icky but (a) that's the point and (b) it's a relatively short part of the movie, and allow me to also bring up counterpoint (c), Lea Thompson.