I have two, the one in bedroom started out basic with a 7500 AIW and old PC with a stereo receiver and as my leftovers got better it ended up an actual 5.1 setup.
Main HT
HTPC:
Asus K8V
AMD 64 3200+
768MB DDR 3200
2X Seagate 200MB EIDE drive
Pioneer 106 DVD -R/+R
Liteon DVD ROM/CDRW
AIW 9700 Creative Audigy 2 ZS
Antec Overture HTPC case
Zalman Reserator with CPU and GPU blocks
Non PC hardware:
Denon AVR3801
Panasonic 5 Disc changer (DVD Audio capable but connected via optical digital so not used for DVD Audio)
Toshiba SACD/DVD Audio 5 disc changer (used only for audio, the unit is a peice of crap but has great sound and was inexpensive)
ancient Technics 60 disc CD changer
4 JBL HLS 610s and HLS center, Infinity 10" powered sub, Sony 12" powered sub ( the Infinity is okay, the Sony was a pretty budget unit but together after a lot of adjusting they sound fine, I love the JBL HLS speakers with all my heart, haven't given a thought to upgrading speakers since I got them years ago)
Zenith 27" HDTV (I want a big screen dammit!)
Pretty happy with the setup except I want a big screen and the crap Guide+ software ruins how nice the MMC updates have been. I have been dealing with the Guide+ disappearing cursor bug since my AIW 7500 in many different boxes and finally have come to the conclusion that I will never buy another AIW no matter how much I like the hardware, tried every fix and always keep my software and drivers up to date and for three years the bug just keeps coming. .
I watch DVDs almost exclusively from the HTPC, I use the 5 Disc Panasonic for TV series discs and the Toshiba for Audio. With the Reserator my HTPC is inaudible, a goal that took a bit of effort to attain, every silent air-cooling solution I tried ran too hot in the cramped Antec HTPC case, it was fine with air cooling and my original P4 2.4 but it wouldn’t handle low noise/silent air cooling at all with a P4 3.0 533MHz FSB Northwood and was only a bit better with the A64.
Bedroom HT
HTPC:
ASUS P4TE
P4 2.4 @ 2.67
512MB RDRAM
2x 200MB Seagate EIDE drives (have become a big fan of Seagate, 5 year warranty too)
Pioneer 106 DVD -R/+RW
Samsung DVD ROM/CDRW
ATI 9700 Pro, Audigy 2
Hauppauge blackbird tuner card with Sage TV (bought as bundle)
Coolermaster Aluminum case
Non PC hardware:
Sony STR-DE897 Receiver (pretty happy with this under 300 dollar unit, has two sets of Analog-ins so I can connect both the Pioneer and HTPC via analog for 5.1 audio formats and proper use of Audigy 2)
Pioneer DV-563A DVD Audio/SACD (very nice budget unit IMO)
Very old but still loved Polk mini-monitors Front L/R, Polk CS1 Center, Wharfedale Bipole surrounds, 2 slaved Klipsch SWS subs
Walmart special Toshiba 20" "normal" TV
Heh, I love my bedroom rig, having surround for the bed is pretty nice, couldn't be more pleased with the Sage TV/tuner card combo, it feels and works like a TIVO is connected to my TV not a PC, all works without fuss from my universal remote. The PC is leftovers from my old main PC and feel it is kind of a waste of a still decent PC as it really is rarely used for anything but recording and watching broadcasts. If/when I ever manage a big screen for my main HT, I will put the HDTV in the bedroom. Setup is used a lot for SACD/DVD audio playback, has a decent sound.