http://espn.go.com/blog/truehoop/post/_/id/23776/putting-the-nba-to-the-fat-test
Hayes Davenport of CelticsHub, evidently lacking appropriate hobbies, spent a lot of time calculating NBA players' body mass index.
What he found was that -- assuming the published heights and weights of NBA players are correct -- the Clippers are the fattest team in the NBA, followed closely by the Celtics.