I'm looking to build a high-end computer for college that can handle pretty much any game on the market for atleast the next two years. I'll also be using it as my TV and stereo system. Money is not really a problem, but I don't want to waste money by buying parts that are either a ripoff or are more powerful than I could ever put to good use. I have some ideas for parts from reading these forums but if you think another part would be better than the ones I have listed feel free to suggest it.
I was thinking that I would get one raptor drive for OS and programs and then another drive for storage. I already have an external 250g hd.
The case is problematic for me because on top of the balance that must be struck between noise and temperature, I also need the thing to be moveable. The one complaint about cases like the antec 900 are that it is impossible to move. Could two college students reasonably carry a loaded antec 900 from a car to the dorm room without killing themselves? Do I not need such an extreme case for the specs I've outlined? This is probably the area of most uncertainty.
Motherboard: P35 & 680i are chipset types. 680i's main selling point is the ability to run two Nvidia video cards in SLI mode. As this isn't relevant for most people, P35 is generally the way to go these days. The Gigabyte board you posted is perfect.
CPU: The difference between 'Q' and 'E' is quad core vs. dual core. The quad core Q6600 will give you much better performance over a dual core CPU in programs that can utilise all 4 cores. For a multi-purpose machine with uses other than pure gaming, it's probably worth getting a Q6600 if you can afford it.
GPU: I'd never recommend Ultras as they're way overpriced compared to GTXes, but whether you want one or two depends entirely on your budget. If opting for 2 cards, get the 680i board instead of the P35 one. Either way, don't get either of those cards you linked: the EVGA stock speed GTX is $485 after rebate and it's easy enough to OC it yourself.
PSU: The Corsair is a great choice if you have one 8800GTX, and the PCP&C is a great choice if you have two.
Cooling: Personally I'd go for a Thermalright Ultra 120-Extreme + Scythe fan.
RAM: Good value kit there. Bear in mind that 4GB is pointless unless you're running Vista 64.
HDs: If money is no object then by all means get a Raptor. They don't offer particularly good bang for buck though IMO and you could easily skip it. Also I'd go for a SATA storage drive myself rather than IDE.
Case: An Antec Nine Hundred won't be *that* heavy. If you like the look then go for it; it certainly keeps your stuff cool.
Sound: I wouldn't bother with the soundcard myself as onboard is good these days, but then I'm no audiophile.