That PC in the picture runs Gentoo 64 bit Linux and is my home desktop and is still running today.
My other main PC is my laptop which is my daily user. It is a Dell studio XPS 15 inch laptop with 2.6 quadcore processor, 8 gigs of ram, a 160 gig ssd, dual Nvidia 260m cards and runs WIndows 7 , lots of VM's incuding Backtrack and dual boots Ubuntu 10.04 with awesome window manger.
I have various other servers and laptops laying around but I do not use Backtrack as my main OS.
I also have my favorite machine: Password Crackers ŧ The Tools Server gets a Fat Upgrade