A.G.
My favorite fast meal since I was a kid: spaghetti and meatballs made with worchestershire sauce, barbeque sauce and cream cheese. 4 ~2.5 inch meatballs cook in a covered glass dish in the microwave in about 3 minutes (turn meatballs in the middle - you want the red gone, but don't overcook til they're hard).
We also do quesadillas constantly -- stirfry whatever meat (usually chicken) and veggies are in the house in one pan. Season with garlic, salt, pepper, whatever. Each of us combines that with tortillas, rice, cheese and salsa as we see fit.
Another tip is to buy your meat at Costco. It's half the price and twice as good.