We just discovered that OGRE and CEGui made an appearance at SIGGRAPH this year! JeDI pointed out that DefColStudio, "a simulation framework consisting of implementations of various
published methods for deformable modeling and collision handling" is the application used to demonstrate the paper Meshless Deformations Based on Shape Matching,
and it uses OGRE for rendering and CEGui for the interface. You can
browse some very nice images and download the demo from their site.
