In reply to The Lemming: Always interesting to hear other peoples views on hdr/tonnemapping. These types of images come in for a bit of stick as not being photographs.
What is a photograph? Surely the true purist will only be happy with the image that comes from a 50mm, lens which closest reproduces the angle of view from the human eye, and the image recorded must be as exact in exposure to the original subject as is possible.
The act of recording the image to film and then print brings about changes that are an abstraction of the original subject. Use a wide angle lens and add a graduated filter and you have a few more abstractions that, depending on the final image, few photographers would have any objection too. Then of course you could also record the image in monotone, is there any greater abstraction of the original image which is as universally accepted.
Most photographic entusiasts try every trick to make their images more interesting, long lenses, wide lenses, tilt shift, filtres of every kind, low viewpoints, high viewpoints, under/over exposure doging and burning. For me hdr/tonemapping is just another tool/trick to produce images that I like. If other people like them, good!
I use Photomatix and though I'm not an expert on this software I have done a fair bit with it. There is a link to my flickr site with its tonnemapped set on my personal page. Drop me an email if you want some guidelines.