2008 NCAA Division I FBS football rankings Harris Interactive Poll Harris Interactive Poll

| Week_6_Oct_5 | Week_7_Oct_12 | Week_9_Oct_26 | Week_10_Nov_2 | Week_11_Nov_9 | Week_13_Nov_23 | Week_14_Nov_30 | Week_15_Final_Dec_7 |
|---|---|---|---|---|---|---|---|
| Michigan State (5-1) | Wake Forest (4-1) | Michigan State (7-2) | California (7-2) | Pittsburgh (7-2) | Michigan State (9-3) | Michigan State (9-3) | Northwestern (9-3) |
| Wake Forest (3-1) | Vanderbilt (5-1) | North Carolina (6-2) | West Virginia (6-2) | Tulsa (8-1) | Georgia Tech (8-3) | Northwestern (9-3) | Virginia Tech (9-4) |
| Northwestern (5-0) | Ball State (7-0) | South Florida (6-2) | Maryland (6-2) | Cincinnati (7-2) | Florida State (8-3) | Pittsburgh (8-3) | Mississippi (8-4) |
| Wisconsin (3-2) | California (4-1) | Oregon (6-2) | Florida State (6-2) | South Carolina (7-3) | Northwestern (9-3) | Mississippi (8-4) | Missouri (9-4) |
| North Carolina (4-1) | Pittsburgh (4-1) | California (5-2) т Georgia Tech (6-2) т | Tulsa (8-1) | California (6-3) | Pittsburgh (7-3) | Oregon State (8-4) | Oregon State (8-4) |