Ubuntu 8.10 is out today. You can download a copy for yourself at http://www.ubuntu.com. If Ubuntu is not the Linux for you, then check out some of the other Linux Distros I've tried and liked. The Pre-release version has been out for a while, I have not tried it but will definitely get the 8.10 on the release date, today! For those of you who already use Ubuntu, you can update your current install with the following console command apt-get dist-upgrade.
I found and interesting article about the founder of the Ubuntu project on The Register.
Have you tried Linux? Have you tried Ubuntu? How do you like it? How do you compared it to OS X and Windows Vista or XP?