Former Patriots and Chargers safety Rodney Harrison is on the doorstep of immortality as it was announced last night that he is one of 15 modern day finalists for the Pro Football Hall of Fame. Harrison played with the San Diego Chargers from 1994 to 2002 and with the Patriots from 2003 to 2008. Harrison won two Super Bowls with the Patriots and is on the Patriots and Chargers 50th…