Based on Greyscalegorilla.com's tutorial for creating the Discovery Channel rebrand cube transition effect, I wanted to see if I could create the effect in After Effects with Element 3D. In the end I had to model the cubes outside of After Effects but that was all. All the mattes, specular, and ambient occlusion was done with Element 3D. After creating the cube transition I wanted to see if it could be done with another shape, so I tried triangles and rectangles, which look ok but I think the cubes look the best.
You can watch a tutorial here - vimeo.com/63365176