What was Shawn Micheals and Hunters best feud prior to becoming World Champion their first time?

HHH was nothing before his feud with Mankind/Cactus Jack......this is the feud that got him the main event spot. And to be specific it would be that one PPV match maybe at Summerslam where he landed on a pallet and had a huge wood splinter in his calf and continued the match.