Last time I was at NAVA, amongst other things, I got to interview Keith Robinson - if you don't know who he is, you will by the end of these videos (there's two parts), or you can simply read the description.
Part 1: http://www.youtube.com/watch?v=G4oHR0zWr2Q
Part 2: http://www.youtube.com/watch?v=Aws1heJKznU