Agree, it's a fascinating film. It confirmed exactly what everyone suspected about Russian doping/cheating, though it was still stunning to see it all laid out so clearly. Two thoughts:

1, the IOC is as corrupt as suspected. The way WADA recommended banning Russian athletes from Rio for the overwhelming state-sponsored cheating, and the IOC over-ruled them, says everything about their real commitment to clean sports.

2, the filmmaker, a very good enthusiast cyclist, did an aggressive doping program, and actually performed worse than before he doped. It's encouraging to know that, at least in this anecdotal case, aggressive doping didn't lead to magical improvements.