Robert Grossman received a 1977 Academy Award nomination for "Best Animated Short Film" for Jimmy The C (James Picker, Robert Grossman and Craig Whitaker, producers; Motionpicker Productions). 

During the 1980s, Grossman and his brother David produced a number of animated television commercials under the "Grossman Brothers" banner. Grossman's preferred technique was replacement animation, in which separate puppets (or parts of puppets) were sculpted to represent each increment of action. A single character might have dozens of different heads, enabling the expression of any desired word or emotion. The technique was used on The Nightmare Before Christmas.