My friend Macon sent me a link to a remarkable Flickr portfolio.
The photographer, Stuck In Customs, is doing really interesting things with high dynamic range (HDR) imaging. HDR software combines multiple exposures of the same scene to create images that have more gradations in tone between light and dark.
Today's FlickrFind is a great example of what HDR can do aesthetically.
Digital pictures tend to have a restricted dynamic range compared to film. HDR is one way to compensate for the limited dynamic range of digital sensors.