I read the Sentinal and 2001 (the book felt more like "hard science fiction" than the movie). The Sentinal was a decent story, but I liked 2001 a lot. I was going to say I hadn't read 2010, then I realized I had, but it just didn't make much impression on me. I deliberately avoided the books in the series after that.

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The Leif Ericson Cruiser