#4. The Montreal Screwjob
There isn't a wrestling fan alive that doesn't know about The Montreal Screwjob. The cliff notes of the story are that Bret Hart was ready to leave WWE for WCW and was defending his Championship against Shawn Michaels at Survivor Series back in 1997.
Hart contractually didn't have to drop his Championship, but the company didn't want him to take the title to WCW since they were in the middle of a war.
Michaels and Vince McMahon then went on to conspire a way to win the match and when Michaels locked on the Sharpshooter on Hart, the referee called for the bell and awarded Michaels the Championship.
This match and moment gave birth to the Mr. McMahon character in WWE, the chairman of the company became the villain in the story and was able to create an entire character off the back of it.
Mr. McMahon was the chairman that got Steve Austin over before going on to become one of the company's most hated stars throughout the early 2000s. There were even theories that the whole thing was staged just to create the character because it seemed to work so well for McMahon.
That night was a turning point in WWE for so many reasons, but the main one was that it created the man who went on to control the company for more than two decades.