Yea, I am just not sure about airflow in that case. Also, having a nice quiet cooler is good for when watching media and listening to music and such.
Ok, here is something a bit cheaper.

Intel® Core™2 Quad Q6600, 2.40-GHz @ 1066Mhz w/ 8Mb Quad Core (Socket 775) (Retail Box) w/ Heat Sink & Fan $274.99

Antec® P182 Aluminum Advanced Super Mid Tower Case, Black $139.99

Asus® P5K, Socket 775, Intel® P35 Chipset w/ PCI Express x16 (ATX) $129.99

Sapphire® Radeon™ HD 2600Pro - Radeon™ HD 2600Pro VPU w/512Mb DDR2 PCI Express x16 $69.99

Corsair™ 4Gb PC6400 XMS2 DDR2 TwinX Matched Pair Series (TWIN2X4096-6400C5) $144.99

Antec® TruePower Trio 650 - 650W ATX12V v2.2 Power Supply (Retail Box) $119.99

Generic 1GB USB Flash Memory (Retail), Silver $9.99

500GB Seagate Barracuda 7200.11 SATAII-300 7200RPM 32Mb OEM $119.99

150GB Western Digital® Raptor™ SATA-150 10,000RPM 16Mb OEM $184.99

LG GH20NS10 Dual Layer DVD±R/RW Drive (SATA) OEM, Black $29.99

Sapphire® Theatrix™ Theatre 650 Pro (PCI) (Lite Retail Version) $69.99

APC® Back-UPS® ES 750VA (Retail Box) $94.99
Subtotal $1,388.30
It won't remember the tuner I selected so I am going with this. If you want a tuner you really should look into all the offered ones yourself though. I have heard good things about what IIRC was the Elgato Hybrid or something. Or was it one of those eyetv ones?
And no, I will never back down in regards to a UPS unless you already have one. I don't know if that UPS would be enough though as I have no clue how to calculate VA. So yea, I am just guessing. In the long run, even 5 seconds of use is adequate if the longest your power is normally lost or fluctuating for is only a second or two.(like out here, That is why I have a UPS but the batt is not in good shape and I am using a discontinued model so I am thinking about doing some non-standard replacement)
On the plus side, if you do not want that raptor you can ditch it for either a smaller one or none(knocking off almost $200). If I was getting a drive like that I would likely have windows keep it's paging file or w/e there.
As for the gfx card, I just wend for cheap there.
Come on, we need more people suggesting stuff, I am feeling like an idiot here.