This web site tells you if the food in your pantry, or the expired food in your fridge, or the stuff in the back of your freezer is still good!
Food past the expiration date may not be bad. Sometimes manufacturers use those dates for quality control and inventory control at the grocery store. Use this web site when you're in doubt.
The site will also tell you if the food can go into the freezer...and for how long. Handy kitchen tips, storage suggestions, even a Q&A section.
If you can eat it, it's listed on StillTasty.com.