Cant decide just one.. Anyone want to pick from the following?
Shane Mcmahon vs Big Show - Judgment Day 2000
Shane Mcmahon vs Steve Blackman - Summerslam 2000
The 2000 King of the Ring tournament (yeah the whole thing except for Bull Buchanan)
Pat Patterson vs Gerald Brisco - Hardcore title, Evening Gown match - KOTR 2000
The Rock/Kane/Taker vs Vince/Shane/Triple H for WWE Title - KOTR 2000
Undertaker vs Kane - Summerslam 2000 (first time Kane's mask was pulled off)
Many of the Submission matches Jericho had with Benoit for the IC title (2000)
Stone Cold vs Triple H (2 out of 3 falls - 1st normal, 2nd street fight, 3rd Cage) - No Way Out 2001
The Rock vs Triple H w/ Special Ref HBK - Ironman Match - Judgment Day 2000
Triple H losses cleanly to the Brooklyn Brawler and Kai-en-tai on an episode of Smackdown 2000
The Rock vs Chris Jericho in a Mcmahon-Helmsley faction governed Lumberjack Match - Smackdown 2000
The Rock, Undertaker, Kane vs series of slobber knocker opponents (3 vs 20 handicap) (lead by Vince mcmahon) Smackdown 2000
More to come..
EDIT to add:
The first TLC matches between EC vs Hardys vs Dudleys - (Wrestlemania, Summerslam 2000)
Raven vs Kane vs Big Show in a triple threat Hardcore title match - Wrestlemania 2001
William Regal vs RVD - Wrestlemania 2001 (awesome match in my opinion)
Hardcore Holly vs (forgot opponent

) Where they leave the arena and actually fight on the street where you can see the cars passing by and them crossing the busy street of new york with camera guy running after them - lol - Smackdown 2000