I am no food photographer, but I have spent many reverent moments in the presence of such talented folks and know it's no small task to take a good picture of food. No matter how delicious your pasta dish tastes, and no matter how nice it looks to the naked eye, once you put your camera on it, it all goes to hell.
We recently came across an nice article on taking good food shots. Although it mostly addresses those with fancy-pants digital SLR cameras, it does have some good points that we can all take into consideration next time we decide to subject our lovingly-prepared meals to the mean camera lens. No need for a professional set and rig; with a few tips of depth of field and styling, you'll be amazed at how your shots will improve.
Food Photography and Creating Edible Food Photos with Food Styling (Benjamin Christie, August 15, 2006)