Sean pointed me to this list of the “Ten Most Harmful Books of the 19th and 20th Centuries”, and to a thread on Tech Report discussing the list. (They get into some interesting debates over there.)
I feel bad that I have never actually read any of the books on the main list or on the “Honorable Mention” list. This reminds me of my early Internet chatting days, when someone told me I should read Ayn Rand. I wrote on a post-it, “Read Ayn Rand”, and put the post-it in a pile of papers. Never did actually read anything. :>
I think I need to get a library card and start rectifying my lack of culture and historical knowledge.