The perfect fight has yet to happen. It's almost happened, but not yet.
#4-Randy Couture vs Big Nog-EPIC battle of stand up AND ground, momentum changes in both stand up and ground, crazy technical skills showed by each. It lacked the big stage and a clear cut finish.
#3-Shogun/Hendo-Wild fight, filled with violence from both. Multiple momentum swings, big hyped fight. Lacked a clear cut winner, one was rewarded a lhw title shot while the other co-main event against Brandon Vera.
#2-Hughes vs Trigg 2-Build up, much hyped fight. Bad guy vs good guy. Momemtum changes, coming back from brink of defeat, and a clear cut finish. It lacked momentum changes(each guy had it only once), and not much back and forth on the stand up.
#1-Rory vs Robbie 2-Build up, title fight, both fighters at their peak, multiple momentum changes on the feet. Clear cut finish and of course the epic end of round 4 stare down. This fight lacked technical battle on the ground as well as no momentum changes on the ground.
You get a fight build up like Hughes/Trigg or Rory Robbie, a technical masterpiece like Couture/Nog, violence like Shogun/Hendo, multiple momentum changes like Shogun/Hendo, and a FINISH, THAT, will be the PERFECT FIGHT.