The Rock his it out of the park at WrestleMania X8, XIX and XX. All three were not only great, but different as well.
Agree with Jake the Snake's "wallowing in the muck of avarice" promo from WrestleMania VI.
I really like the somber interview segments that Gene Okerlund conducted with Ric Flair throughout the course of the Starrcade '93 PPV. It really emphasized the importance of his career threatening match with Vader.
And I always get a kick out of the Fabulous Freebirds interview at Great American Bash '90.