Rooting for the Jets and the Broncos, as they provide the least resistance of all the potential first round matchups, IMHO. I'd rather see Miami get in over Houston, but since Miami losing provides another means of getting in, go Texans.
Houston needs a bazillion things to go right for them to get in, but none of them are terribly unrealistic (in fact, a win for them at Miami this week is probably the most difficult task they have). An interesting situation could be presented next week if Houston's pieces fall into place, as the Patriots might be resting their key cogs, which could allow Houston to get in and face the Pats in the opening round (if the Pats remain the 3).