Re: $600-800 Suicidal Overclocked Gaming/Theater rig
In that budget range I would go AM3, get an Asus or Gigabyte motherboard.
I'd get an Antec PSU probably, a NEO series or an Earthwatts series depending on which one fit better with my build/budget. Or an 80+ Certified OCZ PSU.
I'd get a Phenom II Quad or Tri core CPU.
I'd get a 5770.
I'd think long and hard about a mid tower case, deciding between an Apex Vortex 3620, a Rosewill Blackbone, an Lian Li offerings in my price range, and Centurions.
I'd get whichever had better wire management.
I'd probably get a Cooler Master Hyper 212 for a cpu cooler if I was going to get a 3rd party cooler.
I'd get my RAM depending on combo deals.
As far as DVD burners and stuff like that goes, I'd probably get a Sony Optiarc or an LG burner.
And I'd get a Samsung Spinpoint F3 for my HDD.