With TV season about to end in a few short weeks, I've started planning my next HTPC project.
New Gear:
Case: Moneual MONCOSA 312B
Motherboard: Gigabyte E7AUM-DS2H mATX Nvidia 9400 HDMI
CPU: Intel Core 2 Duo E8400 3GHz
HDD: Seagate Barracuda 7200.11 ST31000333AS 1TB SATA 2.0
Optical: Plextor Blu Ray
HDTV Tuner: Hauppauge WinTV-HVR-2250 Media Center Kit Dual TV Tuner 1213
Memory: CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
PSU:PC Power & Cooling Silencer PPCS370X 370w
Reused Gear:
HDD:
WD Scorpio 160GB 2.5 SATA
SAMSUNG Spinpoint M6 HM500LI 500GB 2.5 SATA
Seagate Barracuda 7200.11 ST31000333AS 1TB SATA 2.0
WiFI: Netgear WG111 v.2
Keyboard/Mouse: Logitech diNovo Edge Bluetooth
Antenna: Terrestrial Digital DB2 Multi-Directional HDTV
I still haven't decided on a CPU heatsink.
The case is smaller than my old Antec NSK 2400 and taller than my GMC AVC-S7-B cases and can hold 3 3.5 HDDs. I'm planning on using the 160gb as the OS and progams, the 500gb for music (no, I don't have that much music), a 1tb for recording HDTV and the other 1TB for ripped media. Might seem like overkill but I don't plan on building another HTPC for some time to come. I don't anything about running RAID setups and I'm not sure it would be better or not.
The 2 2.5 drives will be held in a bracket that I bought from A-Tech.

The case uses low profile cards and has limited space for fans which means I may not be able to use passive cooling on the CPU. I still have some things that I want to try with some of those Scythe slim fans.
It's hard to tell from the case picture but I'm pretty sure that there is no vibration dampening for the HDDs. So that's another thing to look into. I'm planning on ordering the case in the next week or so.