I find that soups freeze great. Just don't add any starches until you thaw and cook them that night (noodles, rice). Add the hot soup on top of hot noddles or rice. Yum!
I buy the whole chicken rotisserie roasted (not much more than buying a whole roaster and doing it yourself). One meal that night, and toss the rest in a pot of boiling water while I do the dishes for the soup stock. Peel off all the leftover meat, and refrigerate overnight. Next day, skim off the fat, and freeze for soup later. For soup, just thaw the stock, add your veggies, some seasonings, the fresh rice or pasta, and it's a nice meal for 1-2 nights. You can even re-freeze after it's soup (just don't add the starch!).
I also make meatballs and cook in a frypan to make them firm (I don't like mushy meatballs!). I make several pounds at a time and freeze enough for a meal in each zip lock. The for the meals, I throw the frozen meatballs into prepared sauce and simmer until heated through and cooked down a bit and serve over pasta.
Lasagna freezes well, esp. if you don't cook the noodles! Just put the lasagna together with the dry noodles, and cover with foil and freeze. Make one for tonight and one for the freezer! When you take out to thaw and cook, the baking takes care of cooking the noodles, and they don't end up all mushy from the freezer.
I cube up leftover steak and pork roast bits, even roasted chicken and put in the freezer until it's time to make chili. The I thaw out all those "Chili Fixins" bags, throw them in with the regular chili ingredients and almost never have to add hamberger. I made a BIG pot of chili just this week that will last us for many meals, appetizers, chili dogs, and even breakfast burritos.
Any pot roast or swiss steak, BBQ pork or beef or chicken (I do the Carolina style with vinegar), or tomatoe based sauces will freeze well.
Cream sauces will not freeze well, and be careful re-heating anything that has a cream base (soups). Try not to boil!
I've also heard you can cut up all your salad fixins (Except the lettuce, that browns once you tear it)for the week in baggies, and throw a salad together quickly that way.
Sometimes a big bowl of cereal or an omelete and toast for dinner is really good!
Good luck and happy cooking!