The reviews are uniformly positive about Oz, with praise clustering around its ensemble performances, forceful writing and willingness to confront prison violence without offering much comfort. Most critics regard it as an important influence on later television drama, particularly in its treatment of difficult male protagonists. Its portrayal of racial divisions, predatory behaviour and institutional tensions earns respect for its believability. The experimental flourishes and effective voiceover also draw praise for giving the brutality purpose beyond shock.
The reservations concern how long that force lasts, and how much grimness the drama can bear. Variety admires the prison setting’s realism but finds the relentless bleakness burdensome and offers little sense of anyone to root for. /Film and Collider question the plausibility of later storylines, while The AV Club notes diminishing returns. The spread is between admiration and qualified approval, rather than a dispute over the programme’s strengths.