Add in the hot pepper flakes. You can add extra if you want the sauce to be more spicy, or less if you don't really like it too spicy. Pour in the peeled whole tomatoes and stir over a medium flame for about ten minutes. As you stir, use a wooden spoon to break the tomatoes apart. After ten minutes of cooking the sauce, add the bucatini into the pot of boiling water and cook as per the package instructions. Continue cooking the sauce while the pasta is cooking. Drain the bucatini and add it into the amatriciana sauce pan. Mix together and serve with a sprinkle of freshly grated pecorino cheese, topped off with a few basil leaves. Salute and cin cin!