Wide angle zooms

Mogens' Canon 10-22mm rocks. That was what I read out of the lineup of Nikon, Sigma, Tokina and Tamron wide-angle zoom leenses. It's conclusion was to buy a Nikon, but further down argues that he prefers the Canon with lower distortion and price. I'll borrow Mogens' lens and put some pictures here. Meanwhile, my take on wide angle has been my Canon 20mm f/2.8 (hmm, no pictures online yet, I'll have to do something about that. I've had the lens for like half a year now) and fish eye lens adapters like the 0.42x I was sent instead of what I'd actually bought or my father's 180 degrees fisheye adapter. That works well also, but 10mm is awesome!