TomDuff invented DuffsDevice while working at LucasFilm?. Read about DuffsDeviceInDuffsOwnWords.
While working for Pixar, he has won two of AMPAS's (Academy of Motion Picture Arts and Sciences) Scientific And Technical Awards (Scientific and Engineering Award) - Oscars.
While at BellLabs he contributed heavily to PlanNineFromBellLabs, including the implementation of the rc shell ( http://doc.cat-v.org/plan_9/4th_edition/papers/rc ) and the Mothra web browser.
Also see http://en.wikipedia.org/wiki/Tom_Duff and http://www.tomduff.com.