What I like about GTD (among other things) is that it seems to have a great story behind it. It is not something that was thought of as a theory and a tool box "nice to haves" by some journalist turned life wisdom guru. But rather a lifetime of action oriented hard work collected and boiled down to GTD.
I am also interested in the journey from the auto detailer to writing GTD 25 years later. What happened in between!? Biography now!