Definitely the rivalry between the New York Yankees and the Boston Red Sox. My husband is an avid Yankees fan; I am a long-time New York Mets fan. We root for our teams; however, when the Yankees and the Mets are playing each other, we are a divided household. I think there is cross-town rivalry and then there is the rivalry between certain teams. My husband had the golden opportunity to meet New York Mets legend Mookie Wilson, got his autograph for me, and thanked him for beating the Red Sox in the 1986 World Series. The base hit by Mookie Wilson, that rolled through Bill Buckner's legs, remains one of the highlights of post season play. We were at my parents' house at the time, watching the game. When Mookie Wilson's hit occurred, I jumped so high, I could feel my hair touch the living room ceiling. Root, root, root, for the home teams ...