If you are familiar with WPF development, you will know that one of the most useful features is the ability of WPF UI development is to use Styles and Resources. Basically, it is a way of creating skins for your controls, like CSS would do for HTML, and then applying those skins.
What this basically means is, like in the CSS scenario, WPF controls can be skinned and re-skinned without having to change any of the code and functionality. The entire look and feel is well-separated from the presentation layout.

Dax Pandhi and Nukeation have pulled off some fantastic stuff just leveraging that. This was in the works for a while and I was always excited to know about this project. Dax has been gracious to give me a full license of the product as well, and it looks wonderful. (Thanks Dax).
In return, I thought I should let everyone know that reuxables is really a smart way to jazz up your WPF applications by leveraging some of the fantastic design that Nukeation churns out.
Check it out at http://reuxables.nukeation.com.
Way to go Dax!