This thread reminded me that I've been putting off my semi annual cleaning out of the computers. :) Amazing how much dust gets in a system in a few months.
I've built about half my PCs. I got a couple with what we wanted at a great deal so just payed the price, and then had a friend with a PC shop that built a couple. His discounts were so much greater that he could do the work for what I would pay in parts. My current PC I built, and went for the quiet route. With the larger cooler and good case flow it's almost silent.
Daniel is probably moving more air through that PC case than moves through the engine in his Fiat!