Alfredo Chicken, Broccoli, and Cheesy Shells - this was AWESOME! I beg of you NOT to use jarred alfredo sauce, though - try this, it's fabulous and only takes 10 minutes: http://tastykitchen.com/recipes/main-courses/alfredo-sauce-2/
Pizza Pasta Bake -- All the flavors you love about pizza put into a pasta dish! This takes no time at all to throw together. You can have fun with the "toppings". Add in green peppers and mushrooms or keep it simple with just cheese and pepperoni. This will be a hit with your whole family and the leftovers heat up well too!