CPU = Intel Core i7 930 Processor You might be able to get this CPU for a lower price on Newegg... Its really up to you but I'd get a Phenom II X4 at 3.2GHz (4 Cores) for $50 less. I do video editing too. But really any high preformance processor is good.
Motherboard = ASUS P6X58D-E LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard ($240 Newegg) You should really get everything from Newegg.
This is a really good board but its VERY pricey... which is a good thing if you have the money. If you do decide to go with the AMD Phenom CPU, consider getting the most expensive AMD mobo from ASUS, its $40 less, and has everything the mobo you mentioned above has.
Case = Cooler Master’s Centurion 534 ($39 TigerDirect) This is the perfect case to get. Anything from Cooler Master is generally good. You need a lot of airflow for the high end parts you plan on buying, so I strongly suggest getting a case from them. Drop another $60-70 for a Cooler Master HAF 922 or 932 case, they are both huge and can fit anything in them. They also have A LOT of airflow (HAF=High Air Flow)
Power Supply = Ultra LSP650 650-Watt Power Supply DO NOT SKIMP OUT ON PSUS! Noone can stress this enough. You should be spending AT LEAST $90+ for a 650watt PSU. Remember that if you buy a bad quality PSU, and it fails, it can take your expensive components with it. Dont take chances like that. What I suggest from newegg is this:
Sliverstone, Antec and Corsair are the best brands of PSUs.
Memory = G.SKILL PI Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 G.SKILL makes good ram from what I've read. Im picking up 4GB myself soon for my build. Be sure to check if your motherboard supports DDR3, and if it supports the clockspeed of your ram, in this case 1600mhz, like mine.
Video card = XFX HD-575X-ZNFC Radeon HD 5750 1GB 128-bit GDDR5 PCI Express 2.0 x16 ($130 NewEgg) This is a very good card. Im debating on whether to get this or the 5770. For another 30 dollars you can get the XFX 5770, which is a lot better. Heres a link:
Personally I would get the 5770, only because its much faster. Its equivalent to a gtx260, which is usually priced at $200+.
SSD = Kingston 64GB SSDNow V-Series 2.5" SATA Solid State Drive ($145 NewEgg) You really cant go wrong with SSD drives, they have no moving parts. Perfect for editing as they are FAST. Kingston is a good company too.
Hard Drive = SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive ($79 NewEgg) Really good price imo, dont know much about samsung hdds, so I cant say anything.
Last thing: get an aftermarket heatsink. Your CPU will be on load a lot with you rendering videos and all. I suggest any i7 compatible heatsink and fan from Cooler Master. Make sure it can handle the wattage (in heat) of your CPU. BUY FROM NEWEGG!