Several big & bad moments there....
I'll add Austin/Bret double turn at WM13 as one of the best... the iconic image of Austin writihing in pain, blood seeping from his head whilst trapped in the sharpshooter.
The aura of Hogan vs Rock at WM18 was another big moment.... the fans still showing the love for Hogan!
For whatever reason I always liked the moment at WM8 when Warrior came back unannounced, to save Hogan from a double beat dwon from Sid Justice and Papa Shango!
More bad moments:
The Double Doinks at WM9 was just plain silly (even if Bobby Heenans commentary on it was funny!)
I think it was WM17 when Eddie was wrestling Test... and Test got his feet tangled up in the rope and couldn't get out. Eddie and the Ref had to free Test for the match to continue! It looked rather awkward and embarassing for them