Overview
The Jerk is a 1979 American comedy film directed by Carl Reiner and written by Steve Martin, Carl Gottlieb, and Michael Elias (from a story by Steve Martin and Carl Gottlieb). This was Martin's first starring role in a feature film. The film also features Bernadette Peters, M. Emmet Walsh, and Jackie Mason. Critical reviews were mostly positive, and The Jerk was a major financial success.
Plot
Navin Johnson, a homeless person sleeping in a stairwell in Los Angeles, addresses the camera directly to tell his life story.
The white adopted son of black sharecroppers in Mississippi, Navin grows to adulthood naïvely unaware of these circumstances. He is unable to dance in rhythm to the spirited blues songs played by the family, but finds that he can do so perfectly to a champagne-style song on the radio. Seeing this moment as a calling, he excitedly decides to leave home and travel to St. Louis, from which the broadcast originated. Along the way, he adopts a dog and names it "Shithead" after angering the guests at a motel by waking them up in the middle of the night, having misinterpreted the dog's barking at his door as a warning of a fire.
Shortly after Navin begins working at a gas station, a crazed gunman chooses his name at random from the telephone book and decides to kill him. As the gunman waits for an opportunity, Navin attaches a device to a customer's eyeglasses to stop them from slipping down his nose. The customer, Stan Fox, is an inventor who promises to try to market the device and split any profits with Navin. The gunman opens fire against Navin but misses, and Navin flees to the grounds of a traveling carnival.
From Wikipedia (CC BY-SA 4.0).