It's Alabama, Clemson, Georgia & Ohio State, and unless one of the others goes unbeaten I can't see that changing without something big happening. Oklahoma would've been 5 on my list til now, but now you're probably looking at LSU being there if they win this one.
Now I'm trying to think what my rankings would be 
EDIT: Think I could just about cobble together a shaky top 20.
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1. Alabama
2. Ohio State
3. Georgia
4. Clemson
5. LSU
6. Oklahoma
7. Penn State
8. Notre Dame
9. West Virginia
10. Auburn
11. Washington
12. Michigan
13. UCF
14. Wisconsin
15. Stanford
16. Oregon
17. Kentucky
18. Texas
19. NC State
20. Viriginia Tech