#5 Triple H(1) vs Rey Mysterio(2) (2006)
It's quite ironic that despite being with WWE for almost a decade simultaneously, WWE never planned a long program between Rey Mysterio and Triple H given their legendary personas as 'The Ultimate Underdog' and 'The Power Hungry Heel'.
However, it won't be unfair to blame the organization for this as the two were always on separate brands throughout their full time careers. The only time we actually witnessed a 1-on-1 showdown between them was in the Royal Rumble match in 2006, and there's no doubt that it was as good as any other interaction we could have witnessed between them.
See who is stunned by Hulk Hogan's words HERE
Entering the match at #1 and #2, the two were constantly at each other's neck for an hour, eliminating other superstars and simultaneously trying to throw each other over the top rope. The two actually made history by becoming the only pair to go over an hour in the same Rumble match, and went on to challenge for World Championships at WrestleMania 22.