Unger presented the former at the 1962 Cannes Film Festival, where its stars (Katharine Hepburn, Ralph Richardson, Jason Robards and Dean Stockwell) won the Best Actress and Actor awards collectively.

Films financed, produced and distributed by Commonwealth United under Unger's tutelage include The Madwoman of Chaillot, The Magic Christian, Julius Caesar and Battle of Neretva.

Additionally, over a 20-year period Unger owned and operated (with partners) a number of movie theaters in Manhattan and The Bronx, among them The Tudor Theatre, The Lido, The Studio, The Little Carnegie, The Cinema Rendezvous and The Fine Arts.

[12] In the early 1950s, Unger worked as Vice President of Snader Telescription Sales[13] and headed Station Distributors, "one of the country's first television syndication outfits.

"[14] Unger co-founded National Telefilm Associates with Ely Landau[15] and Harold Goldman in 1954, where he served in various capacities and rose eventually to Chairman and President before leaving in 1961.

In November 1962, Unger formed a partnership with Bill Sargent and Joe Louis to promote Cassius Clay's (later Muhammad Ali) first closed-circuit fight against Archie Moore in Los Angeles.

[22] In 1978, at a special investiture ceremony "in recognition of his services in promoting US/Yugoslavian cultural and trade relations," Unger was bestowed a "Medal of Honor" and designated an "Honored Artist" by President Tito[23] for films that he either produced or co-produced in Yugoslavia: Battle of Neretva (Bitka na Neretvi, nominated for Best Foreign Film at the 42nd Academy Awards in April 1970), The Day That Shook the World (Atentat u Sarajevu, 1975) and Force 10 from Navarone (1978).