5 of 9.
I'm missing "Godel, Escher, Bach (even though I own it)", LotR, "Visual Display of Quantitative Information," and "Neuromancer."
I would add H.P. Lovecraft to the list before anyone else that anyone else has mentioned, but that's a personal preference. I'd also add (this would be well past 9 books) Asimov, Heinlein, Arthur C. Clark, and Tad Williams, for the "Memory, Sorrow, Thorn" trilogy.