Ladies and Gents:
I present to you my cabin air filter after 56,380 miles:
http://photos-a.ak.fbcdn.net/hphotos-ak-snc3/hs059.snc3/14657_678750940526_1504734_41230462_8217688_n.jpg
Evidently the previous owner had decided not to replace it himself after he drove through Pompeii a few days after the eruption. I guess that he wanted to collect as much black soot as possible through the intake. It looks like a dragon sneezed on it. I know that turbo engines pull in more air, and therefore more junk, but great Caeser's ghost...
I had the dealership replace it while I was in there for other things, which rang in at $75. The part itself was $35, plus labor, which seems ok to me considering the time intensity involved. I may try it myself next time around.