I searched and this wasn't on here yet so I thought I'd post it. From their site:
"Pizza Party is a free text based software package for ordering pizza, or for throwing pizza parties.

Pizza Party has many features to make ordering pizza easy:

* Can order pizza with only a few keystrokes.
* Can save pizza preferences.
* Can use batch files for ordering many pizzas.
* Has easy to use flags for ordering different toppings.
* Runs on most UNIX-like operating systems.
* Supports most currently popular topings like "mushrooms", and "pepperoni"!
* Unattended / background operation.
* Pizza Party is distributed under the GNU General Public License."

and it's in Perl of course!

You can get it at http://www.beigerecords.com/cory/pizza_party/.