Too many to name just one so I did a list of my top matches of that decade!
Mr Perfect vs Bret 'Hitman' Hart (Summerslam 91)
A technically flawless wrestling match, the greatest IC champ ever vs a future WWF champion in his fir PPV title shot in the mecca of MSG.
The '92 Rumble Match for the WWF Title
The only time the title has been on the line in the Rumble. Ric Flair was in number 3 and faced off against a who's who of the business, meeting every one of them head on, including a classic mid-match showdown with Roddy Piper, before going on to win the match and the title after 62 grueling minutes.
Rowdy Roddy Piper vs Bret 'Hitman' Hart (Wrestlemania VIII)
The brawler vs the mat technician, face vs face. Roddy Piper was and still is one of the most over wrestlers in the business, and hardly ever lost in his prime. This was a great contrast in styles match that saw Piper pass the torch to Bret that Hogan never would.
Ric Flair vs Randy 'Macho Man' Savage (Wrestlemania VIII)
For me the best WWF/E title match in Mania history, a fiery brawl between arguably the two best performers of the 80's, the match was just packed with emotion and had me on the edge of my seat.
Sting vs Vader (The Great American Bash 92)
The ultimate monster heel vs super-face match, they had many great matches together but this was the best. Sting lifted his level to meet Vader's physical style and put Vader over as a killer with as clean of a win as you are likely to see a heel get on the top face, Sting came out of it looking as strong as he was going in after hitting a bunch of moves on Vader that you just never saw done to big men before.
Shawn Michaels vs Razor Ramon (Ladder Match, Wrestlemania X)
A seminal match, there had been other ladder matches but this the one that put it on the map as a fans favourite, I'd say easily the most popular gimmick match in wrestling. To this day the most important and best ladder match.
Bret 'Hitman' Hart vs Shawn Michaels (Iron Man Match, Wrestlemania XII)
Another seminal match, the first of it's kind in going for an hour, I actually think the Triple vs The Rock Iron Man match slightly tops it but this was an amazing showcase of wrestling ability and endurance.
Shawn Michaels vs The British Bulldog (King of the Ring 96)
This KOTR is famous for the birth of Austin 3:16 but was headlined by a fantastic WWF title match, the power and strength of the Bulldog vs the speed and athletic ability of HBK, they had tremendous chemistry together and put on a great match at a time when business was down for the WWF but the match quality was still high.
Bret 'Hitman' Hart vs Stone Cold Steve Austin (Submission Match, Wrestlemani 13)
Arguably the greatest brawl in WWE history that was not only a fantastically brutal match but also the site of the amazingly executed role switch that would prove so vital in changing WWE's fortunes.
Shawn Michaels vs The Undertaker (Hell in a Cell, Bad Blood 97)
Another seminal match involving HBK, this was the first, and for my money the best, Hell in a Cell match. The story was fantastically told as HBK's cockiness eroded when he couldn't put Taker away, leading to the epic scenes of the two fighting atop the giant cell. A blood soaked HBK being dragged from the ring by Triple H and Chyna "victorious" (after the debut of Kane) and semi celebrating sums the man up.
The Rock vs Mankind (Raw 29.12.98)
These two had some great matches, this one may not have been the best but it had the greatest feel good moment in all the years I've followed the WWE.
The Hardy Boys vs Edge & Christian (No Mercy 99)
The first ever WWE tag team ladder match, filled with incredible athleticism and breathtaking high risk spots, the match put all 4 men on the map.
Triple H vs Vince McMahon (Armageddon 1999)
I have to hand it to Vince, he is not a pro wrestler and for a man his age to put on this kind of physical brawl, lasting nearly 30 minutes, it was a great achievement and a hell of a straight up fight, plus the ending with Steph really was a shocker and a big moment in the growth of Triple H that would shape the next few years of the WWE.