I never really got into either Nietzsche, who struck me as being a bit of a strutting adolescent, or Bataille, who struck me as the kind of person I would want to keep as far away from me as possible. But anyway I think those two lectures on N by Heidegger are crucial to understanding the latter's relationship with the NSDAP. The former was written in the 30s, which I think of as Heidegger's Promethean period and coincides with his enchantment with (his own peculiar understanding of) National Socialism. The latter was written IIRC in 1943, during his period of disenchantment. I think you can see that reflected in the analysis of N. Though it has been over a decade since I read either book.
It is interesting that the earlier lecture series contains a pointed attack on biologism, which is probably THE central National Socialist dogma, and specifically points out Spinoza as a "European, universal philosopher," along with Hegel, Hume, and some other people. I think that is the only time in Heidegger's entire enormous corpus that he mentions either Spinoza or Hume. I have a hard time believing it was a coincidence. It's actually almost gutsy.
Rosenburg's Myth of the 20th Century is one of those books I've always wanted to read due to its historical importance but have been too disturbed at the thought of somebody seeing it on my desk for me to actually get a copy. :)
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