One of the biggest knocks against the NBA is that when the season starts, there are only five or six teams that can truly win the championship, making the regular season and the early playoff rounds interminably tedious. Not this season. As we reach the midway point – 18 teams have played at least 41 games, another nine have played 40 – there are no less than a dozen teams with legitimate title aspirations, including a handful that haven’t been in the