_I, Tonya_ is a shining example of how a 'based on a true story' movie should be made. Equal parts truth, empathy and pathos -- with a double helping of humour -- the film takes the disaster that was Tonya Harding's youth and makes it palatable without diminishing its gravity. Craig Gillespie has achieved the impossible by filming a train wreck with all the grace of a ballet. Or a figure skating routine. (Wanna see a derailed locomotive do a triple axel?)
The film stock reinforces the look of the late 80s / early 90s conveyed by the clothes and the cars but none of these is as efficient as the music. My god, the soundtrack is as well used as that of _Baby Driver_; even more so as the songs here communicate not just the mood of the moment but define the decade, as well.
As for the acting, Margot Robbie has the Midas touch because whatever role she takes on, you Midas well nominate her for all the awards. Sebastian Stan does such a good job you'd hardly suspect he's one of the hottest actors working today and so much good has been written about Allison Janney that anything I say would be redundant.
To make a long review short, _I Tonya_ is the movie that this sympathetic and tragically sincere equivocator deserves.