This article from Forbes magazine had some good points, things worth trying to get a house sold in this difficult environment we are in.  You can read the full article here: 

http://www.forbes.com/2008/10/21/homes-sale-fast-forbeslife-cx_wb_1021realestate.html

There were 5 points to be taken from it:

1-Position your listing in the right price range

2-Have information readily available about schools, taxes, utilities, neighborhood covenants/restrictions and anything regarding a lien that has to be relased prior to closing

3-Advertise to people who have just listed homes within a 5 mile radius of your listing.  Possible they have kids and not wanting to leave the school district..worth trying.

4-Offer creative financing terms to attract more buyers

5-Use a private auction.  If the reserve isn't met, the owner isn't obligated to sell.

Most of this sounds like textbook ideas, but many agents forget what some of their options are. Hope this helps someone.