[QUOTE="1stop,  post: 24394, member: 429"]
Another one that come to mind is  Celtics 18 championship wins. They defeated the Mavericks to become Finals champions, and it became clear exactly why the Celtics are in contention to be one of the greatest franchises in NBA history.
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This championship means a lot in the history of the Boston Celtics, but I also credit the Mavericks with it. They pretty much went on an amazing playoff run and the challenges they put before the Celtics were great.