WOW, the question would have to be, what wouldn't I? LOL. I do video editing so I need a Dual Duo Core Mac, with about 16 GB of Ram, 1 TB Raid drives, maybe a NAS device, then a good ole PC, Quad Core, about 4 21 inch monitors, also a 50" fall from the ceiling television to plug the xbox 360 into for free time. Hmmm, complete surround sound connected to both television and computer.
Wood floors with a lot of desk space. A flat screen TV mounted in the middle of the wall hooked directly to the computer (netflix, hulu, video editing, etc). Nice cabinets along the wall above the desk for convenient but stylish storage. A large marker board (must have). A fully loaded Drobo.
I'd love to be as minimal as possible, hiding clutter when possible. I'd want to put the file/print server in the basement and hook the WiFi router up to a booster antennae to reach the whole house. The more stuff I can efficiently stick in another room, the cleaner my office looks.
I could spend all day planning it out and spending way more money than I can afford!
I would have a AMD quad core with Vista Home Premium with video input and have it on my wireless for showing video over the network. Also have to have PVR software. I would have a 37" Flat Screen to play the sims 2 on. lol I am addicted to the game.