Albert Brooks paid tribute to his older brother, calling him a "brilliantly funny man. You will be missed forever." Einstein was an Emmy-winning writer for The Smothers Brothers Comedy Hour and Van Dyke and Company who went on to play blundering stuntman Super Dave Osborne on the Showtime series Super Dave and elsewhere, including numerous appearances on Late Night with David Letterman. Most recently, he played Marty Funkhouser on Curb Your Enthusiasm, appearing in 22 episodes, including regularly on Season 9 in 2017. "Marty didn't appear on Curb until s4, yet Einstein and Larry David had a rapport that made it seem like he'd been there forever," tweeted Alan Sepinwall. Einstein was also the first repeat guest on Jerry Seinfeld's Comedians in Cars Getting Coffee, appearing in Season 1 and Season 9. "I’m in shock," tweeted fellow Curb actor Richard Lewis, adding: "His long career is hard to match. His role on #curbyourenthusiasm was excruciatingly brilliant! Our cast and crew will be devastated. He was so loved. He told me how much he loved LD and Curb. RIP buddy."