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 |
|---|---|---|---|---|---|---|---|
| Texas (5-0) | USC (4-1) | Texas Tech (8-0) | Oklahoma (8-1) | Oklahoma (9-1) | USC (9-1) | USC (10-1) | USC (11-1) |
| Penn State (6-0) | Florida (5-1) | Florida (6-1) | Texas (8-1) (1) | USC (8-1) | Penn State (11-1) | Penn State (11-1) | Penn State (11-1) |
| Texas Tech (5-0) | Texas Tech (6-0) | USC (6-1) | USC (7-1) | Penn State (9-1) | Texas Tech (10-1) | Utah (12-0) (1) | Utah (12-0) (1) |
| USC (3-1) | BYU (6-0) | Georgia (7-1) | Oklahoma State (8-1) | Utah (10-0) | Utah (12-0) (1) | Texas Tech (11-1) | Texas Tech (11-1) |
| BYU (5-0) | Georgia (5-1) | Oklahoma State (7-1) | Utah (9-0) | Boise State (9-0) | Boise State (11-0) | Boise State (12-0) | Boise State (12-0) |