I wanted to introduce our company, RenderStream. A user of this board has been nice enough to recommend a few ideas in addition to PSC/HPC systems we were already offering. http://www.renderstream.com/HPC.html
It was suggested that we take some reccomendations from the community on what systems you would like to see built. Most recently we added 8 GPU boxes designed for CUDA as well as our PSC_4GPU mobile designed to meet the needs of developers who want to develop and demonstrate their work on the road.
We would love to get some additional feedback from the community on what types of boxes you are looking for.