Chris Jericho vs. Dean Malenko
This was actually the feud that got me into wrestling, more than Hogan vs Sting or Austin vs McMahon or any of the other big feuds going on at the time. Jericho was really starting to hit his peak as the best heel in the company who wasn't part of the nWo (well, maybe second-best, since you had Eddie Guererro getting into his groove around the same time), and Malenko was the perfect foil for him by being the complete opposite in demeanor. Jericho would talk up a huge game and be over-the-top and obnoxious, and Malenko would just beat the hell out of him while barely saying a word. I came into wrestling knowing it was all a work, but Jericho's heel work was what got me to be able to suspend my disbelief and get into the show, just to see the infuriating little bastard finally get what's coming to him.
Plus, there's always that Slamboree Battle Royale, which was one of the best moments in WCW's history:
Cruiserweight Battle Royal - WCW Slamboree 1998 by sir-roddick