When I sold my grandparents' house in 2006, I must've had a genius agent because she did nothing like what these people did. Or maybe my agent was doing it all wrong and homes are supposed to be on the market for 90+ days.... (oh, I know, the market is bad, blah, blah, blah)
Have the camera auto focus on the good parts of your curb appeal
Be sure to have someone point out what's for sale
Clearly state what is NOT for sale
Clear the counters of rotten fruit
Show amenities, like trash service
Show that you've done due diligence in cleaning up
And of course...
Have flowers & Jesus bless each room