Penne (or quills). One of the most popular pasta forms in Greece, often used in pastítsio. You might also see
πένες αλ φορνο (pénnes al forno): baked in a cheese sauce
πένες ριγέ (pénnes riyé): grooved penne
πένες 4 τυριά (pénnes téssera tyriá): with four different cheeses
πένες αραμπιάτα (pénnes arrabbiéta) in a spicy red sauce
Image by Naotake Murayama