Basketball doesn't really have a rivalry with the consistent intensity of Bears-Packers or Yanks-Bosox, but we do have a few real good ones. Celts-Lakers, Bulls-Knicks, Celts-Sixers, Knicks-Heat, and lately Kings-Lakers. It's tough to find good rivalries in the NBA cause there aren't that many franchises that are old enough to have a history of rivalry with another franchise. Tell me if i've forgotten any rivalries and vote on which is the best.