#4 The Undertaker brings Vince to his knees
One of the biggest storylines of the Attitude Era saw The Undertaker kidnapping Stephanie McMahon. This forced Vince McMahon to turn babyface for a short period of time and align with his longtime nemesis Stone Cold Steve Austin. Soon after, it was revealed that the higher power behind this entire ploy was none other than Vince McMahon himself. This resulted in Linda and Stephanie McMahon giving Stone Cold the position of CEO at the Titan Towers.
During the early stages of this angle, on an episode of Raw, The Undertaker took a teddy bear that belonged to Stephanie, set it on fire, and mocked Vince with it as the boss got on his knees, helplessly looking at the burning stuffed toy.
#3 The Undertaker breaks the ring
On the road to Royal Rumble 2006, Kurt Angle moved to SmackDown and won a battle royal to win Batista's World title, that he had relinquished due to an injury. Angle went on to face Mark Henry at the Royal Rumble PPV, and successfully retained his title. After the match, The Undertaker came out on a chariot, surrounded by druids.
He raised his hands, paused for a while, and suddenly lightening struck the ring on all four sides after Taker brought down his hands. As a terrified Angle watched, clutching the World title in his hands, the ring collapsed to the ground. The message was clear as day: The Undertaker had come back and wanted a shot at Angle's World title.