HDR experimentation

I have been trying out some new software to create an HDR photo (high dynamic range) the process involves taking a number of photos of the same scene at different exposures (tripod needed) and then putting them together to creat the final image (with a little bit of tweaking in photoshop) The first photo below is one of the four I took and the bottom one is the final result. The program I used is photomatix and is a free trial download but it adds the watermark when taken into photoshop until you buy the software. Interesting results though I think.