Joker ★★★★★

This movie is absolutely stunning. It combines a comic accurate tale with a gory, dark, and depressing film.
Joker makes you feel sympathetic towards Arthur as he descends into madness, with excusing him for his crimes. It deals with mental illness so accurately that it’s hard to tell if Joaquin Phoenix is even acting. 
Phoenix is amazing, De Niro is perfect, and the atmosphere never relents.
plus the ending is open ended and can be interpreted in many ways, so you could see the movie and leave with a different consensus every time.