Just a tip - get yourself a vac sealer! That way you can freeze, defrost and cook in the bag, they can go in the microwave or in boiling water. Heaps better than containers as food lasts much longer when it's vac sealed.

As for food - we always do a big batch of spaghetti sauce, lasagna (beef and a chicken one), a couple of different soups, zucchini slice, gnocchi bake, beef strog, chicken and mushroom casserole...that's all I can remember just now.