High Dynamic Range Imaging

I have been experimenting as of late with HDRI (High Dynamic Range Imaging), which is a process by which you take a scene and photograph / film it using several exposure levels, then recombining the resulting images into photos using a tone mapping program. The results have an ethereal amount of detail and color, all the while lending a "City of Gotham" look to the pictures. I came across this guy's pics of NYC while looking around.