I just wiped XP off my bedroom PC and put Ubuntu 10.04 on it, but I'm finding little things I need from windows now and then. Thanks for reminding me about Virtualbox - I'm going to try that over the weekend!

For those that have never tried Linux - what's the absolute best thing about it? When the computer starts up and your desktop comes up... it's done! You're ready to go! It's not loading more crap, or running some weird thing in the background, and you don't click on something only to have it sit there for 30 seconds before it responds, etc. I feel a twinge of disbelief every time I start up. I've put Ubuntu on 3 or 4 machines now and they all do this. It's great.