Here's the description from the app's developers:
Domino's Pizza's first app for WP7 features:
• A Full Menu
• Store Locator
• All Meal Deals available
• Ability to Customise Your Pizza with extra toppings or special requests
• Payment via credit card, cash or on collection
A follow-up version of this app is already in the oven, which will include voucher usage, so watch this space!
Domino's Pizza can be downloaded from the Windows Phone Marketplace for free.
If you're in the US and feeling hungry for Pizza right now (and don't want to wait for a delivery from the UK), you might want to check out the Pizza Hut application. PizzaMe will help you decide how many pizzas you should be ordering and Pizza Mafia Car will keep you occupied until your pizza arrives.