Stewart Robert Einstein (November 20, 1942 – January 2, 2019) was an American actor, comedy writer and producer. He was known for creating and performing the satirical stuntman character Super Dave Osborne. Einstein was also known for his roles as Marty Funkhouser in Curb Your Enthusiasm and Larry Middleman on Arrested Development.
Einstein got his start as a writer on several television variety shows, including The Smothers Brothers Comedy Hour and The Sonny and Cher Comedy Hour. Einstein won two Emmy Awards as a writer and was nominated four other times. He also won a Cable ACE Award for acting as Super Dave, along with five other nominations.
Einstein was the son of radio comedian Harry Einstein, and the older brother of fellow actor and comedian Albert Brooks.
Einstein died on January 2, 2019, shortly after being diagnosed with leukemia.