I have experimented with HDR a few times with mixed results. I found a layer mask technique on the
Luminous Landscape that is ridiculously simple and can be very effective. In this example, I got better results than HDR or a painted mask in a fraction of the time.
I'm not going to pretend to understand exactly how it works, but it does. You just follow the steps (in Photoshop) and it gives you the ability to tweak the effect to your taste.
BB