Two decades of the top twenty fan favorites and the matches that made them famous. It starts with an insult. ..then comes a push, a shove...a betrayal. Before you know it, the two wrestlers are at each other's throats. It's a rivalry, it's personal...it's a showdown. Some showdowns are straightforward: John Cena wants to prove himself by taking on JBL; Randy Orton knows that if he can slay Undertaker, it will prove that he is the legend killer. Others...