Alright, so I know this is not a computer forum, but hey, if you're in the market for a free operating system that will rock your socks off, take a look at Ubuntu. I recently upgraded my work computer to the 10.04 LTS (Long Term Support) version and it absolutely rocks! Clean, dark interface. Button configuration arrayed to help Mac users switch. Much better handling of dual screens. Simple monotone icons in the task bar.
Ubuntu Home Page | Ubuntu
Give it a whirl! You can download, burn to a CD, and try it out directly from the CD.