A barn shot from my Palouse trip last summer. Single shot HDR w/ NIK's HDR EfexPro. I'm finding it a little easier to get a more natural HDR look with Efexpro than with Photomatix- at least with early attempts. It was starting to rain and didn't have time to tighten up the composition as much as I would have liked.
The Palouse region of eastern Washington state is a fabulous place to visit and photograph. Would love to go back again sometime.