Taking another look at this, here's a team breakdown as I see it.
Titans (11-1):
People have been suggesting Haynesworth, but I don't see it even if he has been very disruptive. There had been talk earlier about Collins, but there are so many other QBs that seem more impressive. Johnson might have had a chance if they gave him the ball more and White scored fewer TD. I really don't see a great option here, as it really has been a team effort.
Giants (11-1):
Eli has started to get a little more consideration than in week's past (but again won't have the volume of stats as others). Jacobs would have been positioned for a run, but he's been banged up and faces tough teams the rest of the way (PHI, DAL, CAR, MIN).
Steelers (9-3):
The Steelers biggest difference makers are on defense. Harrison would probably be the leading option, but it's rare that a defender wins the MVP. There really isn't anyone earth shattering on offense here.
Bucs (9-3):
Another team with a decent record and no great MVP candidates. Garcia seems like the default Bucs option, as no one else on offense has anything close to MVP stats and TB has done very well with him recordwise.
Panthers (9-3):
Not sure how they are 9-3, but that's what the standings say. Williams might be an option with a big finish (but not likely) and Peppers is their marquee defensive guy.
Jets (8-4):
A lot will depend what happens the rest of the way out. NY could win the division or miss the playoffs entirely depending upon how they finish. If the Dolphins win out, MIA would win the AFC East and the Jets might not make the playoffs. Pats could also win out, making this situation even cloudier. Favre and TJones would both be candidates.
Ravens (8-4):
Like the Jets, BAL could win their division or miss the playoffs. I don't see a MVP candidate here.
Colts (8-4):
The Colts could end up on a major role and in that case you can't count Manning out.
Cowboys (8-4):
Talk of Romo as MVP has started, especially if DAL ends up on a hot streak. That may be tough with games against PIT, NYG, BAL & PHI. Barber could also be a candidate if the Boys win by running the ball instead of Romo passing it (provided he's healthy which at the moment it seems like he's not). Cowboys are also not looking good in the playoff tiebreakers.
Falcons (8-4):
Ryan and Turner deserve at least honorable mention here. ATL could end up the #2 seed if they win out (NO, TB, MIN, STL) which would give these guys more of a shot at MVP consideration. I'd put Turner ahead of Ryan just based on their numbers.
From the 7-5 teams . . .
Cassel from NE could be an option if the Pats win out and do so by passing.
Cutler has been the catalyst in DEN if they end strong (but he may already have too many turnovers).
Portis is always in the discussion, but WAS could be on the wrong side of the playoff picture if they lose to BAL this week.
ADP would have to have some huge games at this point and the Vikes would need to win at least 3 times for this to even get any traction IMO. They have ARI, ATL & NYG after this week's bye against DET.
Warner still is lurking on the Cards, but they could easily be a mediocre playoff team record wise. I would expect them to go 2-2 and at 9-7 I'm not sure that Warner would get enough votes.
From the 6-6 teams . . .
Brees could have better numbers than Warner. The Saints could conceivably finish 10-6 and in LAST PLACE in their division and obviously miss the playoffs. A lot would have top break their way for them to make the playoffs, and I doubt the voters will take a guy from a non-playoff team.
If Forte goes on a tear and the Bears make the playoffs, he could also be a candidate in a wide open race.
If I were to guess, if ATL can win out they would be the #2 seed and Turner could be the MVP. Granted, the Falcons haven't won more than 2 games in a row this season and would have to win 6 to do it, so the chances of that happening may be remote.