What are some good items to cook in bulk and freeze for later?

What I like doing is cooking big batches of hamburger meat (5-10 lb) with some onion, garlic, and green pepper. I then portion size it out usually 3/4 lb in a freezer ziploc bags. It's ready for me when I make sloppy joes, SOS, hamburger helper recipes, chili, ceroles or what ever.