2x JBL LSR32s
2x Bose 301 (my roommate's old speakers, being used as surrounds)
1x B&W CC6 center channel
1x Aguilar GS212
1x Harman Kardon AVR 330
1x Crown K1
1x SWR 750x
1x Monster Power HTS 3600
Tara Labs Prism Omni speaker cables, Canare L-2T2S interconnects, Vampire, Homegrown, and Canare connectors, all hand-terminated with Cardas or Kester solder
1x Samsung LN-T5265F
1x XBox 360
1x HTPC running
1x Scientific Atlanta 8300 HDC
1x Logitech Harmony 890 universal remote
2x American Recording Technologies studio monitor stands
Picked up a Harman Kardon AVR 330. The 645 was overkill for what I wanted, since I don't use HDMI at this point, and the 330 was a steal. I also got a pair of JBL E30s with it, which I'll either use as surrounds or give to my parents.
UPDATE 2 (2/13/07):
Found a mint B&W CC6 center channel. It's not quite as high-end as I was planning to go, but there's not enough space for a big center speaker, so this one will do nicely until I buy a warehouse. And then I'll just outfit the whole place with Turbosound.
UPDATE 3 (3/12/08):
Well, the Westinghouse TV blew up, but my roommate got his bonus and replaced it with a 52" Samsung that looks quite good on the wall of our new place. I picked up an SWR 750x and an Aguilar GS212 to play my bass through, and that stack is pulling double-duty as a massively overpowered subwoofer. Also got a Monster HTS 3600, mainly so that I could switch off the Crown using a remote. And finally, we got a new couch that sits in the way of the audio rack, so I just HAD to get a Logitech Harmony 890 to control the whole system via RF (and the one-button system configuration is nice, too). Converted all the display cables, too - the 360 now displays via VGA, the Scientific Atlanta PVR via HDMI, and the HTPC via DVI->HDMI.