With all the rehab I've done, I think I have a pretty good idea of what fixes you should make to a house to get it to sell quicker and for a higher price. However, just to show you can never know everything about a subject, an article on MSN taught me a few new tricks. Some things I didn't know:
Tip #2: I normally replace the appliances in my houses, but if the existing ones are still in good shape except for cosmetics, I didn't know you could just flip the panels over.
Tip #5: Add a closet to a den to make it another bedroom. This is an interesting one. It adds another bedroom, but it decreases the bathroom-to-bedroom ratio. I wouldn't want to turn a 3 bed, 1 bath into a 4 bed, 1 bath, but turning a 3/2 into a 4/2 might be worthwhile.
The other stuff they list is pretty much standard info.