Klitschko

Doesn't really need to be as long as it is, but the superhuman brothers definitely are interesting enough.

He couldn't keep his political manoeuvring out of it, 'capitalism is great!!!'. When it stuck to the facts of their lives and careers it was good but after that bit, myth-making and propaganda suspicions soured it a bit for me. Cutting that crap would've left a good, reasonable-lengthed film.