Having trouble finding a Science Fair Project? The following site has students take a 46 question survey regarding likes and dislikes in science related topics. Next it surveys based upon your top choices. Finally, it narrows down your strongest interest area to a few specific projects. Science Buddies
Discovery Central offers fair project ideas, answers questions, and gives resources and tips for parent involvement.
Successful Science Fair Projects provides a nice outline for the written portion of the project. They also give pointers on what makes for a really well done project.