"We hate Bickle's violence, his twisted, off-kilter views of everything, but we cannot resist him either," the critics write of the main character in Martin Scorsese's 1976 film. "We hear his thoughts through his diaries, which contradict what we see on the outside... There are some things that don't quite add up, but Scorsese's dramatic, visual genius, the emotional resonance of the performances, and the power of the music combine like chemicals absorbed through the pores."
According to , the actor obtained a cab driver's license and drove cabs for weeks at a time to get inside Bickle's head.