October 16, 2008 11:00 pm Who is Joe the Plumber? After last night’s presidential debate, Joe the Plumber has become an overnight sensation. Access does an investigation to find out just who this Joe the Plumber is that has all of America buzzing. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 1:49 New guidelines say women should be screened every other year for breast cancer starting at 40 2:28 King Charles returns to public duties amid cancer diagnosis