I have found lasagna, baked zitti and other sauce covered dishes freeze well. I make big batches of chicken/turkey a la king and it frezes really well. Also beef tips and gravy or salsbury steaks freeze well. You can thaw these and then add cooked nodles, rice or whatever your family likes. Of course there is the usual spaghetti sauce too.
You can precook chicken and freeze pieces or shredded and use later. You can precook hamburger meat and then put in 1 pound servings in a freezer bag for easy use later.
Cook a large pork/beef roast in the crockpot and eat part now and shred the rest, add sauce and freeze in portions in freezer bags.
I cut up raw chicken and place in freezer bag with marinade, like teriyaki or Italian, and freeze. Later I thaw it, drain extra marinade and cook, works like a charm!
I have frozen pies and cobblers, before cooking, and they make a nice treat from the freezer.
I've made a bunch of french bread or bagel pizzas and frozen them for later use, so convenient.
That's all I can think of for now. Oh, yes check the library for cookbooks that specialize in meals to be frozen. I had a good one a couple weeks ago.