I voted Detroit on hope only.
If I had $$ on this, it would have to be Jacksonville.
You need a few pieces to make it through the playoffs.
1. A very good coach. Check.
2. a QB who won't screw it up and has the ability to make plays when needed. Leftwich may not be among the elite, but he's closer than anyone on this list and has the leadership to make it.
3. A strong running game. This doesn't have to be elite (New England for example), but must keep defenses honest. NO and Cleveland aren't bad here, but Del Rio will ensure a good running attack remains in Jax.
4. A strong defense. Again, the Jaguars are almost there. Two of the dominant DTs in the game, a good MLB, an improving secondary.
5. Playmakers at other positions (not always mandatory) - Wilford and Matt Jones will become a very good receiving duo. Anything they get from Reggie is a plus.
Jaguars before any of these, and I wouldn't be surprised if they made it next year, or by 2008.