I don't know how famous he is in programming circles, but in HCI and Interaction Design he is a well-known and respected for his fantastic research on two-handed interfaces.
It is sad that Maya is now an Autodesk product: Autodesk is such a square, white bread, corporate outfit. The interface to their flagship AutoCAD is ludicrously clunky and antique, while something like Revit (another acquisition) is clever but really dumbed-down and limited in scope. Oh well.
Interesting, I'm gonna watch this just for him. As a Maya user, I think the people at AW were as high end as a team can possibly be. They were doing magic to my poor pentiumII.