David Wilson has some simple ratings of college football teams, and I've stolen his code to produce these, using data I got from Ken Massey. It's scaled by 4 from what Wilson uses, largely because of the USCF. Each team in the NFL has at least 1 win and at least 1 loss, and I've dropped Wilson's heuristic of penalizing teams for winning; in games against teams that differ from you by more than 375 (i.e. 15/16 game), I treat the difference as 375. I've also now introduced a factor such that each game counts 1/15 more than the one that preceded it for a given team.

The win-loss reported simply ignores games more than 400 away, except for upsets. (Chicago over Atlanta is the only such extraordinary upset to date.) 

                      W  L  T
                      -  -  -
  1 Tampa Bay         7  2  0 1725
  2 San Francisco     7  3  0 1723
  3 Denver            7  3  0 1705
  4 Atlanta           5  3  1 1698
  5 San Diego         5  3  0 1687
  6 New Orleans       6  3  0 1685
  7 Green Bay         7  2  0 1679
  8 Oakland           6  4  0 1653
  9 Philadelphia      6  3  0 1603
 10 Kansas City       5  5  0 1594
 11 Miami             6  4  0 1588
 12 NY Giants         6  4  0 1578
 13 St Louis          4  5  0 1571
 14 Pittsburgh        4  4  1 1569
 15 Tennessee         6  4  0 1547
 16 New England       5  5  0 1545
 17 NY Jets           5  5  0 1536
 18 Indianapolis      6  4  0 1504
 19 Buffalo           5  5  0 1467
 20 Washington        4  6  0 1457
 21 Cleveland         5  5  0 1452
 22 Jacksonville      5  5  0 1450
 23 Baltimore         4  6  0 1430
 24 Arizona           4  6  0 1388
 25 Seattle           3  7  0 1361
 26 Minnesota         3  7  0 1335
 27 Carolina          3  7  0 1331
 28 Detroit           3  7  0 1322
 29 Dallas            3  7  0 1252
 30 Chicago           2  5  0 1234
 31 Houston           2  6  0 1183
 32 Cincinnati        1  5  0 1149