The regular season is the Play-Off right now Binge, but the system is still not perfect because we end up with too many questionmarks about who the real champion is. A champion should be undisputed and unquestiones IMO. If tomorrow's game is very close then prepare for the onslaught of people who will want to crown USC, Georgia, or possibly West Virginia as the champion.
It's still better to have it decided on the field and taking away from the regular season as well. Besides, I think it would be more exciting to see USC, Georgia, LSU, Ohio St, West Virginia, Missouri, Kansas, and Oklahoma duke it out in a Play-Off system.