Have to say I've built my first new PC in a good few years and really enjoyed it. Even bought some stuff that wasn't the best 'value' but some of the best for the first time ever.
i7 2600K
Msi GD-65 Mother board
4GB 1600 memeory
1TB samsung F3 HDD
600 watt quality power supply
ATI 6870 1GB video card
Nice thermaltake case
plus the usual DVD writer, extra fans and a Gelid Tranquillo Heatsink and fan which keeps the CPU very cool indeed.
Windows 7 HP
£830 all in and it hasn't even broken into a sweat yet.