This is a universal favorite - except for Allison whose vote we no longer count.  I originally got the recipe from: http://bakerette.com/manicotti-with-italian-sausage-and-cream-cheese-sauce/ and then just tweaked it a bit for how I cook.
1 package 8 oz manicotti noodles
1 lb bulk Italian sausage
1 lb bulk ground beef
1 onion
1 garlic
16 oz cream cheese
2 c shredded mozzarella cheese
1/4 tsp salt
1 tsp dried oregano
1 tsp dried parsley
32 oz spaghetti sauce
1/4 c parmesan cheese shredded

1 pkg Manicotti Pasta cooked according to directions on the box.  Drain and cool.

Cook 1 pound Italian Sausage,  1 pound ground beef and for the last 5 minutes of browning add in 1 cup onion and 1 garlic head cut up.  When meat mixture is all browned, drain out the grease and take out half the mixture to save for a future use.  (I will save it for manicotti in the future or for pizza toppings)

To the meat mixture add 16 ounces cream cheese softened, 1 1/2 c shredded mozzarella cheese, 1/4 tsp salt, 1 tsp dried oregano, 1 tsp dried parsley.  Stir till well combined.  I will sometimes turn the heat on low to help the cream cheese soften and mix in easier.

Use 32 ounces spaghetti sauce, either made or bought.  Pour some on the bottom of a 9x13 pan.  Stuff the pasta with the meat mixture and arrange the filled pasta over the sauce.   Pour remaining sauce on top of the noodles.  Sprinkle with 1/4 c Parmesan cheese and a 1/2 c mozarella cheese.  Spray a piece of aluminum foil with Pam and put it over the pan OR lay a piece of parchment over the noodles and then foil.

Bake at 350 degrees covered for 40 minutes and then uncovered for 10 minutes.