Pasta Puttanesca

Ingredients: 1 pound pasta (such as spaghetti or linguine) 2 tablespoons olive oil 4 cloves garlic, minced 1/2 teaspoon red pepper flakes (optional, for a bit of heat) 1 can (28 ounces) crushed tomatoes 1/2 cup pitted black olives, sliced 2 tablespoons capers, drained 4-6 anchovy fillets, chopped (optional) 1/2 teaspoon dried oregano Salt and freshly ground black pepper to taste