What food items do you freeze?

Have you froze something and it defrost and is not edible?

Just trying to think of more items that I can stock up on when on sale (vegetables, fruit, etc-all for making meals/desserts for a later time). This is a quick list of what I freeze; not counting meats like hamburger or frozen veggies, frozen convenient foods or homemade casseroles.
hot dogs
lunchmeat
cheese-block and shredded
sour cream-I dont think it sets back up right, but it tastes the same
chopped up onions for recipes
homemade soups/leftover roast beef to use to make a soup later
soup stock
leftover chili or sloppy joes for lunches
That is about all I can think of, I am sure I have a few more items in my freezer right now.