I way ahead of ya But I think the difference between making a documentary (which would be more geared to people with the same interest) and how you're viewed from the rest of the general public may differ a bit. I dunno, that's just the impression I get from the TMZ video.Watch a movie called "Exit through the gift shop" and you might change your mind...
Its a movie by Banksy about Thierry Guetta and Shepard is one of the leads.
Awsome movie if youre into (street)art.