Libertini married actress Melinda Dillon on September 30, 1963, and had one child with her, Richard. They divorced in 1978.

Two of his more memorable film roles came in the comedies Fletch (1985), in which he played Chevy Chase’s character’s doubting editor, a role he repeated in the 1989 sequel Fletch Lives, and The In-Laws (1979), in which he played General Garcia, an insane Latin-American dictator whose closest advisor was a cartoon face drawn on his own hand a la Senor Wences. He portrayed Nosh, an electronics expert who is the childhood best friend of Burt Reynolds’s character, in Sharky’s Machine (1981).

Libertini appeared on the TV show Supernatural. His final film role was that of a fisherman in the 2011 film Dolphin Tale. From October 2011 through January 2012, Libertini appeared on Broadway as a rabbi in “Honeymoon Motel,” the Woody Allen-penned segment of Relatively Speaking.

Libertini died on January 7, 2016, at age 82, in Venice, California, from cancer with which he had been diagnosed two years prior.