7. Chris Jericho vs. Shawn Michaels - 2003
Simple and effective. You take Shawn Michaels, one of the greatest of all-time, not quite sure if he's definitely going to wrestle full-time, but willing to do big matches like the Rumble and WrestleMania. Then you take Chris Jericho, a big-time Superstar that had frequently been compared to Shawn Michaels throughout his career. Jericho wanted to escape that comparison and out-Shawn Michaels Shawn Michaels by winning the Royal Rumble after entering at #1, Shawn wanted to protect his legacy, so he took the #1 spot, but Jericho's the ultimate prick so he earned the #2 spot.
It all came together quite well and Jericho shocked the world by easily eliminating Michaels in the early goings of the Rumble. Still, it's the most memorable story of the entire match and it wound up being the perfect set-up for their match at WrestleMania, which was an instant classic. It was also the match that gave HBK the confidence and desire to return to as a (mostly) full-time wrestler... and it all started in the Rumble.