I'm a big computer geek. When I had more time, I used to rebuild my systems all the time. Now, I just stick with a particular platform for a while.
Right now I have an older system (Core duo, 2.8ghz, 4gb of mem) that i use as my primary home machine, running Windows Media Center and a cable card. Probably will upgrade later this year or maybe in 2011 once 6 cores become more mainstream and power efficient.
I have a server with virtual machines running a quad AMD 9350e and 8 GB of ram of the low power Geil type. It runs all the time, so looked more for power savings rather then powerful. I have a virtualized copy of Home Server running on it with 3tb's of drive space I use to stream music and video to my xbox and MC.
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For me, living a "normal" life is a lot like learning a new language. I can pick-up a lot of the words as I go, mimick the slang, but I will always have an accent!