Shogun vs Rogerio.
I love that fight.
Also, as per Damone's recommendation, Tito vs Frank (Also a war) and Diego vs. Karo. Great fight.
If you wanna see some great KOs, Crocop vs Vovchanchyn or Crocop vs. Aleks.
If you wanna see why Fedor is not a man, watch Fedor vs Randleman.
If you wanna see some sick stomps and soccer kicks, watch Shogun vs Kanehara.
If you wanna see a slick sub, Aoki vs Hansen features a very nice gogoplata. You'd enjoy it very much.
If you wanna find out that Sylvia is actually a good fighter, watch Sylvia vs Telligman.