He was also the father of comedians and actors Albert Brooks and Bob Einstein (who performed as Super Dave Osborne and as Marty Funkhouser in Curb Your Enthusiasm).

[4] He subsequently continued in the advertising business at another Boston furniture store, Summerfield's,[5] while performing dialect comedy for friends at parties.

One of his friends, Boston bandleader Joe Rines, tried to persuade him to become a full-time comedian, but by this time, he was making a good living as advertising manager for Kane's Furniture.

[6] Einstein finally agreed to make an appearance on Rines' radio program; he created the Greek character of Nick Parkyakarkus for a skit on that show.

[14] As a result of his popularity on the Cantor program, Einstein began a radio show of his own in 1945 called Meet Me at Parky's, featuring the same character, Greek restaurant owner Nick Parkyakarkus.

[18] He suffered a fatal heart attack on Sunday, November 23, 1958, at age 54, during a roast in honor of actress/comedienne Lucille Ball and Desi Arnaz.

was initially thought to be a humorous ad lib (the event was a charity benefit for local hospitals and several physicians were in attendance), but the gravity of the situation quickly became clear.

One surgeon used his pen knife[18] to make an incision for open heart massage; another used the ends of an electric cord as a makeshift defibrillator.

[24] The argument has been made that Albert Brooks, who was 11 years old when Einstein died, has dealt with the trauma of his father's passing through vignettes in his movies.

For example, early in Defending Your Life (1991), Brooks’s recently deceased character, Daniel Miller, finds himself in an afterlife nightclub, watching a terrible comedian.

The episode featured an excerpt, covering the events of Harry Einstein's passing, from the documentary film Let Me In, I Hear Laughter - A Salute To The Friars Club directed by Dean Ward (screenwriter).