I just checked the "
Ultimate Standings" on ESPN. It is a fan-based survey, ranking the multiple aspects of a pro-sports organization, such as access to players and coaches, ticket prices and titles.
The NBA, NFL and MLB are listed, since the NHL is crap.

(j/k)
Surprisingly, in the top 15 there are only 4 NBA teams, although 1 and 2 are among them (while the NFL (6) and MLB (5) have more).
Spurs, Pistons, Pacers and Mavericks are the top basketball representants. It's a nice read, hope you like it.