1. Forrest Griffin vs Stephan Bonnar
2. Chuck Liddell vs Randy Couture
3. Randy Couture vs Tim Sylvia
4. Matt Hughes vs Frank Trigg II
5. Matt Hughes vs BJ Penn II
6. George St. Pierre vs Matt Hughes
7. Roger Huerta vs. Clay Guida
8. Royce Gracie vs Dan Severn
9. Mark Coleman vs Maurice Smith
#10: Wanderlei Silva vs. Chuck Liddell 1
A decent top ten list for sure. A definite 10 ten list? Who's too say. Although these are at least ten of the greatest fights of all time there are some gems that could replace fights such as Randy vs. Sylvia, for say, Randy vs. Pedro Rizzo 1? The Sylvia fight was what it was, Randy making a comeback, but the Rizzo fight was a war that could have gone either way with five rounds of back and forth action.
Maybe add in a Chuck Liddell vs. Vitor Belfort from UFC 37.5 or even Tito Ortiz vs. Vitor at UFC 51, these are also a couple of great fights. Either way there are few more that could be taken into consideration. But everyone has an opinion.