I recently found out about a distribution of Linux that you can download and run SAFELY WITHOUT installing on your pc.

Demo Linux

You can run it from a burned off CD or order it and run it from CD. This comes in handy since I took an oath not to dual or triple boot this machine again (until I can build another one to tinker with that is).

The only thing that I think I can do to make it even more safe is to remove my main hard drive through BIOS when I boot it up. But besides that..... piece of cake.