Parse::RecDescent?!?!!!
What was I thinking? It was written by TheDamian!!!!!
I'll never understand it! :)

Wait! What's this? A tutorial?
And Merlyn has a column in which he talks about it?
And Craig Smith has a tutorial as well?
The list seems to go on and on... so perhaps given sufficient time...
We will just have to wait and see if I can grasp it.