Vinny Del Negro is the new coach of the Chicago Bulls. He played for Jim Valvano in the 80s.
Nate McMillan is the current Portland (and former Seattle) coach. He played for Jim Valvano in the 80s.
Sidney Lowe coached Minnesota and Memphis in the NBA. He played for and won an NCAA title with Jim Valvano in the 80s.
For all the talk about recruiting improprieties and for all the criticism he received for bringing in druggies like Chris Washburn, it looks like Valvano did bring in and coach some quality men after all.
I don't know too many coaches who have 3 former players coaching in the NBA (let alone 2 at the same time), so I'd have to say that Jimmy V has left behind a much better legacy than anyone would've imagined when he first departed the NC State campus almost 20 years ago.