We've already gone over determining the value of your home before you put it on the market correct?  But now let's ask what exactly goes into doing that?

Here are a few things to consider:

Structural items: this includes ceilings, floors, doors, walls, and windows.  These are the most important things to have a look at.  Also included here are carpet, paint, and other floor coverings as well.

Plumbing:  You'll need to make sure that the plumbing in the kitchen/bathrooms is up and running smoothly.  If you can get around to it, try to unclog that slow draining sink! :)

Electric: Same as plumbing - see above.  Make sure that switches work smoothly

Details:  Fixtures, doornobs, drawer handles.  While this might seem insignificant, and given other upgrades/improvements, it is, but they do add a nice finishing touch and make a good first impression.

 Any other ideas out there?