83000, NEW YORK, NEW YORK - Tuesday August 28, 2012. Paul Teutul Sr., dressed in an Orange County Chopper tank top and jeans, smiles for fans as he heads into the "Late Night Show With David Letterman" in New York City. Teutul is best known for his reality show "American Choppers", which co-stars his two sons. Photograph: ? Enrique RC, PacificCoastNews.com **FEE MUST BE AGREED PRIOR TO USAGE** **E-TABLET/IPAD & MOBILE PHONE APP PUBLISHING REQUIRES ADDITIONAL FEES** LOS ANGELES OFFICE:+1 310 822 0419 LONDON OFFICE:+44 20 8090 4079