Well, just got back from a shortish ride and after pulling into my garage figured I'd give the chain a quick shot of lube since it was warmed up. While rotating the rear wheel, what........oh crap, picked up a drywall screw. Hey looks like it's almost just laying on the tire and not penetrated. I ponder for a moment and figure I've got to take it out. So I carefully unscrew it and see it's slightly bent and somehow appears to have almost followed the tread around. No obvious air escaping, but I'll check pressure tomorrow. Appears too far down the side wall for any of the miracle tire sealants to work. So, if it holds air, should I consider myself lucky and ride or, I suspect I know the answer, have it unmounted and inspect the inside to check for any ply damage? I only have a little over 4200 miles on these factory tires (2011 DL650A). 
https://picasaweb.google.com/lh/photo/6pUKg-dKi5___jJAm0uccpCUbK5q5332P9spEKe80fQ?feat=directlink Sorry crappy picture.
https://picasaweb.google.com/lh/photo/fTbXhllC8rKo6k2p1zPilpCUbK5q5332P9spEKe80fQ?feat=directlink
https://picasaweb.google.com/lh/photo/6pUKg-dKi5___jJAm0uccpCUbK5q5332P9spEKe80fQ?feat=directlink Sorry crappy picture.
https://picasaweb.google.com/lh/photo/fTbXhllC8rKo6k2p1zPilpCUbK5q5332P9spEKe80fQ?feat=directlink