#2 Hall and Nash make their debuts
Technically, these are two moments, but it works.
Before May 27, 1996, when a wrestler was moving from one company to another, that performer would usually be repackaged, followed by weeks of videos hyping up their inevitable debut. At the very least, a significant amount of time passes before a performer leaves one brand an appears on another.
May 27, 1996 was eight days - eight days - after Hall's final WWF match (the infamous "Curtain Call" incident). The former Razor Ramon came to the ring through the crowd - establishing the fact that he wasn't supposed to be there, you guys! - told people they knew who he was (never actually saying his name because, yeah, we knew who he was) and that he was there to start a war with WCW.
The following week, he approached the commentary booth, where he was met by WCW stalwart Sting, and informed the former WCW Champion that he had a "big" surprise for him the following week.
That surprise was another former World Champion - Kevin Nash, aka Diesel.
Blurring the lines between behind-the-scenes reality and on-screen stories wasn't an unheard of concept at that point, but these two debuts took that line, put a foot down on it, and began to blur it as hard as it could.
Major rumor about recently released stars HERE