Well I have been playing (or is it called working) with Microsoft Network Operating Systems for almost 10 years commercially now, over 15 if you include my school and college years when I was hacking the school and college network 
. In all those years I have never really looked at another OS, I spent some time on one of my Jobs looking at OS/2 as we were having problems getting it to talk to different subnets on the network but that was about it. I used to also try playing around with Linux, Red hat was the build I tried to install, never got that far, I then managed to install Mandrake but didn't get very far with that.
In recent months I have been looking at Ubuntu
, you can download it free from www.ubuntu.com or you can request a free CD from them (it takes up to 6 Weeks to be delivered but still worth getting a copy as you get several different builds sent to you). Any way so I downloaded an ISO image of Ubuntu 32-bit 7.10. The installation was so straight forward. although I do have some spare kit I wanted to try installing it on a Virtual PC first so I created a new Virtual Machine on my Laptop and to my surprise there was an option in VMware for Ubuntu if you select Custom Settings for your Virtual Machine. 
So I decided to keep all my settings as default for this Virtual PC and see how the installation went.
I set the CD Rom as the IS image I had downloaded and then booted up the Virtual PC that I had assigned an 8GB disk to.
The installation was so straight forward, where as my experience of Linux installations years ago I usually ended up killing my Harddisk or accidentally wiping my windows machine if I was trying to dual boot. I jsut left all the settings as default in the installation and I had it installed in no more than 30 minutes. I have to say I was pretty impressed with the way it installed. I didn't need to install any other drivers and it picked up the bridged network adapter I had assigned to it so I was able to browse the Internet. Then just as I thought it couldn't be any better looking through the menus I saw an option for updates!
I have to say that I am Impressed with Ubuntu I am sure that all builds of Linux are as good but the simplicity of the installation and then browsing my network as well was great! So if you have a PC that can run guest operating systems I would recommend that you try Linux on there any build you wish but I would have to recommend Ubuntu
