Watch Taxi Driver (1976)

On every street in every city in this country, there's a nobody who dreams of being somebody. He's a lonely forgotten man desperate to prove that he's alive.

Taxi Driver — Crime, Drama Film (1976)

Suffering from insomnia, disturbed loner Travis Bickle takes a job as a New York City cabbie, haunting the streets nightly, growing increasingly detached from reality as he dreams of cleaning up the filthy city.