I have a pressure washer and it is one of the best inventions out there. Mine is rated at 1300 PSI and can literally clean anything. I use it to clean the driveway, siding, windows, my cars, the lawnmower, patio furniture, even the gutters. They are fairly inexpensive and require no special equipment other than a garden hose and faucet. Do you own one and what do you use it for?
I think one of the best uses for a pressure washer is to remove the paint on the house. Instead of scrapping it before you want to paint again, use the pressure washer, high concenration spinning nozzle and close range. It blasts off any lose piece and saves time scrapping. You will need another dry warm day to dry before priming the house though.
A pressure washer in one thing that is on my investment list for this summer. My main uses for it will be my car and all of the concrete I have in my yard. I have actually intended on buying one for years but for some reason it is the first thing I decide is more of an extra and the priority level never stays up once it gets near time to make the purchase. I do not intend on doing that this year.