<p>I'll second HDR Efex Pro, great piece of software. Photomatix is good as well, but results with Nik's software are better, except for movement issues. Photomatix still does a great job with these..<br>
I read Christian Bloch's first book, and its very highly technical, almost too much information.Check out Tony Kuypers site as well concerning luminosity masks. It can do quite a bit with an image.</p>