As expected, Domino's has launched a free iPhone pizza-ordering app, letting you place orders, pay for them and track the status of your pizza.
That's a similar list of functionality to the existing Domino's web site, but it's potentially useful if you want some pizza delivered and you're not at your PC. It also comes in ahead of a similar promised offering from Pizza Hut. I'm not equipped with an iPhone so I haven't tested it; if you do, tell us what works (and what doesn't) in the comments.
Domino's [iTunes link]