A mini-rivalry has already formed, due to the Celtics running into LeBron so often in the past 5 years in the playoffs. Add in Boston's hatred of Riley and Ray Allen's defection, and a rivalry has been born. It isn't likely to hold up like Boston-LA, but if the Celtics remain contenders over the next 3 years, it has a chance to be remembered in a similar fashion to Chicago and Detroit in the late 80s.