Sunset, dust storm, and rain. My favorite part of the photo, however, is the birds (click the photo to view larger). It was a happy accident (didn't know they were even there until I reviewed the photos later on). Never be ashamed of the accidents - just be thankful. Boulder, CO.

Canon EOS 5D Mark II, f/9, 1/200, ISO 200, EF 70-200mm f/2.8L IS at 200mm