Cook you spaghetti according to pack directions. Heat the olive oil and crushed garlic in a fry pan. Add the pancetta. Let the pancetta fry up to a golden brown. Don't burn it!
Meanwhile in a bowl beat your eggs Set aside.
After you pasta has cooked, strain it reserving one cup of the cooking water.
Add your pasta back to the hot pan. Off the heat, carefully add the hot oil and pancetta. Toss the pasta to make sure it is all coated with the oil.
Now add the beaten eggs. Toss the pasta so the eggs get combined. If it is too dry add some of the pasta cooking water. You want a cream sauce.
Add the Parmesan cheese and salt and pepper. Serve