#1 Rock and Austin II
Has there ever been a rivalry more intense and personal than the one between The Rock and Stone Cold Steve Austin? I mean, the two were constantly at odds with each other between 1997 and 2003 and wrestled loads of show-stealing matches with and without titles on the line. Their trio of WrestleMania bouts is still a specimen of what two superstars can do when they have a phenomenal story between them.
While their bouts at Mania XV and Mania XIX had the perfect heel face dynamics and were on par with their Mania X-Seven match, it was the build-up to the match in 2001 that keeps it not only above their other two matches but also above other Mania main events. It was not just about the WWF Championship, it was about proving who was the best among the two. The iconic pre-match video illustrates this better than anything else in the world.
Things got a little too personal with the addition of Debra, Stone Cold's then-real wife, as the manager of The Rock and Vince McMahon, who eventually played a massive role in the outcome of this match. Given that this match was the main event of Mania X-Seven, a show that is often cited as the ending of the Attitude Era, one can certainly say that WWF put everything that they had at that time in the build-up of this classic encounter.