Strain the shrimp well.
In a pan heat 2 tablespoons olive oil, sauté the shrimp for about 2 minutes.
Add the minced garlic and sauté until you can smell the garlic, about a ½ minute.
Add the lemon juice, the zest, the ouzo and the dill and cook for about 2 more minutes. Do not overcook. Add salt and pepper to taste.
Boil spaghetti and strain, making sure to save just just a bit of the pasta water. Put pasta back in the pot, add shrimp mixture and the rest of the olive oil (1 tablespoon). Mix well and serve.