Reviewers say ‘Dog Day Afternoon’ is celebrated for Al Pacino’s compelling performance and Sidney Lumet’s direction. It explores themes like crime, media influence, and social issues. The film is praised for its realistic depiction, strong characters, and blend of drama and humour. However, some find it overly long and uneven. Despite mixed opinions on pacing and length, it is generally regarded as a significant work in American cinema, capturing the 1970s spirit.