I bought a nice TV stand there a couple of months ago. Didn't really try to negotiate, but got a decent deal on it, but it might be worth a try, the worse thing they can say is 'No'.
I bought a sectional couch and was able to get a couple hundred bucks knocked off cause I bought 4 peices. I also signed up for 1 year interest free. I was pretty happy about that deal.
You should try the clearance room at Ethan Allen on the SW Freeway near Sugar Land. I bought a couch (full-price) there and had seen a smaller love seat type couch in the clearance room. As I was paying the manager was nearby and I said, "if you ever drop the price on that other couch, let me know." He said, "how much do you want to give me?" and I said, "100 bucks". Sold. It's a great couch that I have in my office. I just has a little koolaid typ stain on one of the cushions. I just turned it over and the couch is like new.