We have a lot fewer than most, but....
Patriots vs. Browns - Box Score - November 7, 2010 - ESPN
This team is a lot more experienced and even-keeled than that one was, though, and considering that they're in the midst of GFY Tour 2.0 I have a hard time imagining a trap game here.
I do agree with what the original poster said to an extent, though, which is that Washington has the capability of (erratically) playing some pretty good football. Cousins is stuck in that weird stage where for every three games he plays, two will be bad and a good one will come out of nowhere. They've had injury issues lately, so that whole situation bears monitoring, but if they're healthy for this game they should prove to be a fairly competent opponent, albeit extremely one-dimensional in that they're pretty much incapable of running the ball.
Don't get me wrong, I expect the Pats to win by multiple scores, but it wouldn't be a shock if we all end up a little surprised because the Pats win by 10-14 instead of the 24+ that's totally in play if the team that's showed up more than a few times this season is there on Sunday..