I'll take any documentary about the lead in to, events of, and aftermath of the greatest man-made cataclysm in world history, without any reservations.

the Great Depression hit. Hitler realized that the economic misery it produced created the circumstances he needed to propel the party into power.

It was always a nasty party relying on violence and intimidation but it never got that many votes until the economy tanked and his 'populist' message with its nationalism and identification of scapegoats started resounding with people.

Fuhrer did his best to scrub. The female relative with schizophrenia euthanized in an institution, his sister, the nephew who spoke out in the US during wartime, the descendants living in Long Island NY. Much of this was newer. Also the in depth segment on Nazi science, tobacco causing cancer was interesting. Nightmare period of the 20th century.