Doc Brown (gleefully): You did it! Not only did you catch Biff and save the universe, but you proved that my latest invention is a success! Go forth time travelers, and remember the future is what you make it!
The Universal 100th show, which is essentially a giant and lovingly-crafted homage to the company's legacy of films. It's especially moving to any big film fan or historian.
The fact that the Studio Tour queue and its starting area contains tribute posters to some of their oldest films, like The Phantom of the Opera (1925) and All Quiet on the Western Front, plus featuring the latter in a homage video to all their Best Picture winners, shows that Universal still loves them very much, and hasn't forgotten about them.