If you don't have access to a TV, you can stream NFL Sunday Night Football for free. This is available for every Sunday night football game including tonights game between the Philadelphia Eagles and the Atlanta Falcons.
My favorite feature is the ability to select multiple camera angles from which to view the game. Check out the excellent cable cam view to give you the best, "I'm in the game" feeling. Other options include end-zone camera, star camera, sideline camera, and of course the live broadcast feed.
You can also pause, rewind and skip ahead. Its a great feature and honestly it provides a superior experience to television over a good internet connection.