HP Home Store has a $450 web-only coupon for the purchase of an HP Pavilion d4996t, m9000z or m9000t Desktop PC configured at $999 or greater with Coupon code: DT4996 Limited supply. Coupon expires on 12/15 (or earlier as we've seen in the past)
Ripped from elsewhere
Here's a Quad version for $650 after coupon, free shipping, figure to get more memory elsewhere
HP Pavilion Elite m9000t customizable TV PC
GN637AV#ABA
* – Genuine Windows Vista Home Premium (32-bit)
* – Intel(R) Core(TM) 2 Quad processor Q6600 (2.4GHz)
* – 2GB DDR2-667MHz dual channel SDRAM (2x1024)
* – FREE UPGRADE! 256MB NVIDIA GeForce 8400GS, DVI-I, TV-out, HDMI
* – No Modem
* – 320GB 7200 rpm SATA 3Gb/s hard drive
* – LightScribe 16X max. DVD+/-R/RW SuperMulti drive
* – 15-in-1 memory card reader, 2 USB, 1394, video, audio
* – ATSC-NTSC TV tuner with PVR, FM tuner, remote
* – Integrated 7.1 channel sound w/front audio ports
* – Norton Internet Security(TM) 2007 - 15 Months
* – Microsoft(R) Works 8.0
* – HP keyboard and HP scroller mouse
* – HP Home & Home Office Store in-box envelope
check that out.