At some point I plan on playing new games on the "big screen," but right now they will be old ones since my HTCP is being built from a bunch of old parts:
Asus A7n8x motherboard (deluxe)
Athlon Xp 2500+ Barton
2*256mg PC3200 RAM I got off an old Dell
ATI 9500Pro graghics card (with component video adapter)
250gb ATA133 HD
DVD ROM drive from an old HP computer
generic CDROM drive
cheapo case that ended up being $9.99 after rebate
don't remember the power supply
No dedicated soundcard at this point as I will use the Coax out from the motherboard
It's not going to be able to play Oblivion at Very High settings like my main desktop, but AoE III, Warcraft, and Diablo might be good.