Arch Linux on a quadcore with FVWM is my machine of choice. VirtualBox for XP and Win7, but that's just for web testing, and for using my old copy of Adobe CS3

Arch Linux on a quadcore with FVWM is my machine of choice. VirtualBox for XP and Win7, but that's just for web testing, and for using my old copy of Adobe CS3 when needed. Secondarily, I have an Arch netbook I use on the run (also for video skype). The lid switch works, even. And lastly, a MacBook Pro that gets used for iOS dev.