A classic went down in the university of Phoenix Stadium as one of the best finishes ever to a Saturday Night Game (on NFL Network). With only 1:40 remaining, the Cowboys are down by 4. Dallas Cowboys quarterback Stephen McMahn threw a touchdown pass to Miles Austin to take a 2 point lead. But, Cowboys kicker David Buehler failed to convert an extra point (PAT), giving them only a 2-point lead. Th…