Does anyone have that Cactus Jack promo from ECW where he was talking about Uncle Willie? That definitely deserves a spot in this thread, but it's been taken off of YouTube.
Here's some thread-worthy Rocky piff:
^ his charisma and arrogance there was off the charts
"yay he said Toronto, that's where we live

"
"but i'll be sure to come back when the Lakers beat the Kings in May

"
Steve Austin's first promo in ECW, and the basis for the Stone Cold character:
And finally, Undertaker's opening promo at Over The Edge 1999:
This shyt was so demonic that someone actually ended up dying in the ring that night.