The long-awaited rematch between Anderson Silva and Chael Sonnen is nearly here.
Silva and the one opponent that can truly be deemed his career nemesis will finally hook up again next month at UFC 148. It's one of the most anticipated UFC fights in history, and all because of Sonnen's propensity for saying ludicrous things designed to hype up the rematch and get under Silva's skin.
With that in mind, what better time to take a look at the biggest feuds in UFC history? These are the rivalries that thrilled millions and escalated pay-per-view buyrates to the highest of highs.