Followers of this blog and readers of my articles know that Topaz is one of my favorite plug-ins - because artistic effects can be created with a click of a mouse (or tap of a stylus).
When I want to create an artistic HDR image (as opposed to a realistic HDR image), I use Photomatix first and then open the file in Topaz. Spicify is my favorite effect, which I used here on this South Beach HDR image.
While you are on Topaz Adjust page of the Topaz web site, click on my mug shot to see more of my Topaz Adjust images. And during your self-guided tour of Topaz plug-ins, check out the Photoshop Bundle - because you can save a bundle :-)
Explore the light,
Rick