If you're looking for a good, reliable, well-researched, non-sensationalized overview of the Nazi regime, this is probably the best available (I've seen 'em all, I think -- even the rubbish). Ian Kershaw was the film's adviser; he may even have written the script (can't remember exactly). Kershaw, a British scholar, is the famous Hitler biographer. I am currently working my way through Richard Evans' triple-decker history of the Nazi state -- currently the definitive Nazi history -- and this doco corresponds very well with it. I would really recommend getting it together with "Auschwitz: Inside the Nazi State," which is also an excellent 2-disc British production.