A whole linux distro, Slackware based I believe, to train you in the dark arts. This distro is deliberately insecure, containing out of date packages, mis-configured apps, and loads of training material. It comes as a live dvd download, so you can run it up as and when you want to practice your skills.
Will be interesting to check it out.
But will you?
@Feej:
If time permits, I will definitely try it. Securing a system is not my strength, however.
( actually I know pretty much nothing, except to use strong passwords -.- )