In a 12-inch nonstick skillet, cook the bacon over medium heat until crisp. Scoop the bacon onto a plate lined with paper towels. Drain the grease out of the skillet if needed, leaving a teaspoon or so in the skillet for cooking the ground beef.

Return the skillet to medium heat and add the ground turkey or beef, onion, salt and pepper. Break the meat into small pieces as it cooks and continue cooking until the meat is nicely browned and no longer pink, about 4-5 minutes. Stir in the minced garlic and cook for another minute. Drain any excess grease.

Stir in the cooked bacon (reserving a little for sprinkling on top, if desired), crushed tomatoes, tomato sauce, oregano, Worcestershire, liquid smoke (if using) and BBQ sauce. Bring the mixture to a simmer and cook for 10-15 minutes (the mixture can gently simmer for up to an hour).

Boil the spaghetti noodles according to package directions for al dente. When done drain the noodles.

Serve the sauce over hot noodles and garnish with reserved bacon and toppings of your choice.