This chap is the extra equivalent of a Wilhelm scream. He appears in so many TV shows and movies. I don't think it's a hoax either as he seems to be aging naturally and surely there are extra agencies who are tapped again and again by production teams.
I have to wonder how advancing technology will help unearth gems like this. Could we have a Google TV feature that lets us search through a huge database of movies or TV shows that feature a face we've drawn around on the touchscreen? I think so!