LunchrTime.com: Eat in the Mobile Way
The free service lets you use the Web site to look up restaurants in your area that use fax ordering. You can then add your favorite items from the menu, and from your cell phone you can actually place your order and have it sent to the restaurant, so your food is ready when you arrive.
While the service is new, and the list of restaurants is mostly limited to the San Francisco area, registered users can even add their favorite eateries (which have a fax order line of course) to the system.