This my first build, replacing a 6 year old Core 2 Duo laptop. My primary use for this new machine is for HD video and photo editing/processing and bluray burning, media server for my residence using plex media server, media consumption, and other basic tasks. I picked Windows 8 for the faster boot/restart times and overall benefits. The high RAM amount is to accommodate a great deal of multitasking and intensive video/photo editing (plus it was basically the same price as 8GB).
I use an external HDD to store my data and backups, as the SSD is primarily used for OS and apps. I will not be gaming on this machine whatsoever for the next 6-8 months, so I am waiting until next summer to invest in a then high-end card. Integrated HD 4000 graphics will work for my immediate needs. The combination of integrated graphics and the intel WiFi card allows for WiDi out to my 42" LED tv. Finally, the 750w PSU is to leave a lot of leeway for future upgrades coming in a few months (internal HDDs and GPU).
These are the prices I paid for this build (Nov-Dec 2012):
intel 3570K - $170
212plus - $20
extreme4 - $70
16Gb ram - $50
intel 330 180gb - $90
Fractal R4 - $100
750w PSU - $100
BD Burner - $40
Intel Wifi - $30
Updated 12/18/12: Hid 8pin cpu power cable (seen in photo 9).
Updated 12/18/12: Added photo of WiDi in action on this PC with TV across the room.