My first build, built a little while ago. Custom built by me, no modifications to the actual case though.
Did this for $1800 using umart.com.au as a supplier.
Case: Thermaltake Xavier VI
Motherboard: Gigabyte GA-X58A-UD7
CPU: Intel Core i7 930 - Overclocked to 4GHZ.
Cooling: Thermaltake Pro water 880i Liquid Cooling System
Graphics Card: XFX ATI Radeon HD 4890
RAM: Kingston Hyperx 6G(3x2G) 2000Mhz DDR3 CL9 Intel XMP
Harddrive: Hitachi 1TB SATA 7200RPM 32M
Disc Drive: Samsung SH-B123A 12x Blu-ray/DVD Combo Drive
Was a fairly easy build due to the size of the case.