Unless Jameis Winston is charged this week and suspended, causing some completely unexpected voter reaction, it's hard to see a scenario in which Florida State could win the ACC title and not be in the BCS national championship game. I'm giving Ohio State the edge over Auburn for the other spot, simply because the Buckeyes are a bigger favorite this week and, presumably, more likely to survive one more game without a loss.
If OSU and Auburn both win, the Tigers seem to be in good position to keep us all on the edges of our seats until the final BCS rankings are revealed next Sunday. Auburn figures to have an edge in the computers, so we'll have to wait to see whether there's enough voter support for a one-loss SEC champion to finish ahead of the Buckeyes. And if Missouri wins the SEC title, would Mizzou assume Auburn's spot as a challenger to OSU? My guess is no, because Missouri doesn't have a win over Alabama, but Mizzou could be sitting pretty with a win and an Ohio State loss.
The only way a team other than these four could reach the national title game would seem to be for Florida State and Ohio State to both lose their respective conference championships. In that case, Oklahoma State and Alabama would be the leading candidates to face the SEC champ. Michigan State might have an outside shot in this scenario, but it's doubtful the Spartans could climb high enough in the computer rankings to have a realistic chance.
