See
this thread for the first part of the story.
So, after filling the insurance company's fax machine with receipts and classifieds for a few weeks, the adjuster called me back to make a new offer. They offered me $3,700, minus a $75 salvage fee, which I accepted. I would have been happy with $3000, so this was acceptable to me. I'm still pissed off that I had to badger them for so long to get an acceptable offer, but it's done.
In case anyone is interested, here are some pics of the car. Sadly, it looks worse in person.
Front End Damage:
Rear End Damage:
Couch Remnants:
Thanks again for everyone's suggestions and support. Remember if you're ever in my position, that the insurance company does not stay in business by giving away money. Be persistant and you'll get what you deserve.