I have a few of them that comes 2 mind, so here goes it....
Hulk Hogan's 1st title win over the Iron Sheik, this on was symbolic 4 a couple of reasons, of course, there was the birth of Hulkamania which began the Golden Era of wrestling, I refuse 2 call it "Sports Entertainment", then there was the storyline of USA vs. Iran, which was in the headlines of the news during the 80's. Hogan's win over the Sheik was a way of symbolizing America's win over Iran @ the time.
Randy Savage's win over Ted DiBiase in the tournament final in Mania IV. as a Hulkamaniac @ the time, I wanted to see Hogan regain the title that day, but thanks 2 the double DQ finish against Andre The Giant, it turned out like this year's NBA Playoffs, with a new champion & who better 2 win it all than Randy Savage?
Ultimate Warrior defeating Hogan 4 the WWF title @ Mania VI was great because it was the first time I had ever seen anyone pin Hogan's shoulders 4 a legit pinfall, it was sad 2 see the Hulkster leave the ring with that sad look on his face, yet he was a good sport about it.
this next title win wasn't even televised, yet it was a great title win once I finally saw the match some years later....Bret Hart defeating Ric Flair 4 the WWF title. it was a shocking surprise when Mean Gene, @ the start of the old WWF Superstars show, announced "LADIES & GENTLEMEN, THE NEW WWF CHAMPION" I was waiting 4 the Ultimate Warriors music 2 start playing, but when Bret's music started up, I was speechless, but also excited that Bret was the new champion because I felt he was deserving of @ least getting a shot @ the belt.
Shawn Michaels defeating Bret Hart @ Mania XII while I was disappointed that Hitman had lost, it was still a great match with neither man scoring a pinfall until the sudden death after the match, the match could've been alot better IMO if Shawn wasn't such a prick, telling the ref "get him the fuck out the ring, this is my time".
of course Eddie beating Brock Lesnar, but what I remember most about Eddie's reign as champion was @ the end of Mania XX, when he came out 2 congratulate his friend Chris Benoit on becoming the World Heavyweight Champion, when I see that match now, it brings tears 2 my eyes seeing that they're no longer with us.
Last but not least would have 2 be my fellow pothead RVD defeating John Cena 4 the WWE title @ One Night Stand, hell, I feel he could've won without help from Edge, but hey, it is what it is.