David Epstein (Sports illustrated) is interviewed on a recent article he published on what role practice and natural gifts play in the development of skills. There is a good chunk of NBA talk in here on height/arm length/Jumping ability.
The interview goes on to speak on many more athletic subjects relating to what role practice plays and all of that is equally interesting but You all should enjoy the Nba portion.
I should mention that this is an audio interview. (Podcast)