From the IllusionCatalyst site:
IllusionCatalyst is a brand new set of instruments designed to increase artistic expression and productivity in Autodesk 3ds Max.
IC.Shape: Instruments for organic polygonal modeling. Draw and erase mesh edges like tracing lines with a pencil on paper, then deform and relax the surface like shaping clay by hands.
IC.Face: Instruments for facial rigging and animation. Bring characters to life letting them express every emotion and mood with a full range of controllers. No more gummy faces allowed.
IC.Mime: Instruments for keyframing and animation. Take a step and get the other one for free, control the flow of the action and each pose more easily. Forget about motion brakes.
Visit the IllusionCatalyst website for detailed screenshots, feature breakdown and to download the scripts.