We're planning on creating a class in advanced Revit renderings. Apparently, this type of rendering isn't a simple as it looks. By the way, Mark created the desk from scratch and we can offer a custom class on furniture creation in Revit if you'd like.
If you're interested in a class on Advanced Rendering or Custom Family Creation, please contact me, and as soon as we have enough people, we'll have web based classes on the topics.
These custom classes can be taken over the web or at our office. Now that gas is so expensive, the web based training can really make a difference.