The following is my likely build (replacing a dead Shuttle XPC), assuming I can find a shop in Melbourne that'll sell the Shuriken.
The system will be used for watching digital TV (with occasional pause / instant record but little to no pre-set recording), DVDs, video files (I'm slowly ripping all our DVDs for convenience), music and web browsing (we like pausing movies every now and then to go search IMDB / wikipedia
Case: Antec Fusion v2
Power: Corsair VX-450
Motherboard: Gigabyte GA-MA78GPM-DS2H (mmm, onboard graphics RAM)
CPU: AMD 4850E
RAM: Corsair TWIN2X2048-6400 C5DHX
CPU Cooler: Scythe Ninja Mini
Optical Drive: ASUS DRW-2014L1T 20X DVD±R/RW SATA LightScribe
I've tried to do my research to make sure this will be as quiet a system as possible. I believe the stock cooler for the 4850E is quite loud, hence the Shuriken which gets superb reviews. The Corsair is
way over-specced for the system, meaning it should run very cool and quiet.
I'm always a bit uncertain about what RAM to get. The PC6400 seems appropriate for the CPU...
I already have an Avermedia DVB-T card, a cheap DVD drive that is
relatively quiet when I force it to spin slowly and a 150GB disk that will go in it unless I'm feeling $115 richer and grab a WD Caviar 750GB too
I also have a wireless keyboard/mouse.
It'll most likely run the latest Ubuntu with Freevo (or possibly just a straight desktop with Amarok and Kaffeine.) I just can't see the point in spending the $170 or so for Vista / MCE.