Pete Draper has made an 11-part tutorial on creating a tornado using Particle Flow in 3ds Max.
RayFire Voronoi vs RayFire Fragmenter
See the improvement offered by the new Voronoi modifier, versus the old Fragmenter, in the new update for RayFire.
Snappers Facial Rig
Check out the Snappers Facial Rig for Maya, (also available for 3ds Max), featuring incredible detail and controls.