Not a bad budget build! I'm still rocking my semi-budget build from late '07 :/ It's showing it's age now, takes 5 minutes to boot up.

Antec 900
Q6600 @3.2GHz
4GB DDR2-800 (soooo slow)
GTX280 (build had an 8800 Ultra, but it was super flaky)
Creative X-Fi Ti
250GB + 160GB slow as hell hard drives
Vista 64bit