I haven't either but I know this cool new 3D printer will be on it.
Stratasys J750 3D Printer
The Stratasys J750 introduces one-stop realism with full colors and multiple materials. The J750's goal is simple: to put the “rapid” in rapid prototyping. Color comes naturally to the J750: neutrals and neons, shadows and highlights, textures and gradients — over 360,000 colors automatically mapped from your design software for photorealistic models. Users can load six materials at once for sweeping variety without swapping canisters.