This latest offering from Hangover trilogy director Todd Philips doesn’t half get the mind going. Having earned rapturous applause from the Venice International crowd, Joker has since met critique for its crude depiction of mental health suffering and inciting of violence. Perhaps such attacks take the situation too seriously – tonal murk aside, Joker is a superhero film – but there is no smoke without fire. As a work of cinema, meanwhile, the film does impress. Philips’ direction is smart and his production handsome. Yet, the real trump card here is an immersed central turn by Joaquin Phoenix. And that’s no joke.