Added (Nikon version) 10-20mm to my wishlist.
I've decided to try and reduce my lens collection to 2 lenses.. a 10-20mm and an 18-200mm. Since going digital, the threat of airborn dust has exploded. The only way I can think of to reduce the risk of contaminating the sensor is by reducing the frequency with which I swap lenses "in the field".
At the moment, I have a 24-50mm, a 55mm micro-Nikkor, a 105mm and a 500mm reflex-Nikkor. That's a lot of lens-swapping.