Cook the pasta according to package directions to al dente and set aside, reserving 1/2 cup of the pasta water.
Saute the pancetta in a large skillet over medium heat until the fat is rendered and it starts to brown. Add the leeks and cook, about 8 minutes. When you add the leeks, you can also throw in a pat or 2 of butter if you want to. This'll give the dish some scrumptious flavor.
After 8 to 10 minutes, pour in the wine, and then cook until reduced, an additional 1 to 2 minutes. Reduce the heat to low, and then pour in the cream. Add salt and pepper to taste. Stir in some Parmesan.
Toss in the pasta, adding a little pasta water to thin as needed. Serve with Parmesan over the top - delicious!