The copy of Ulysses that my grandfather bought in Paris in 1928, at which time it was banned in the US.
He was, of course, much smarter and more literate than his granddaughter, but I enjoy displaying the books I inherited from him so I look well-read. Biography of Henry James? History of the English Speaking Peoples?* Of course! Um… how about that Peyton Manning!?
*Clarence was actually my Jewish grandfather, though his reading tastes tended toward the WASPy and Anglophile. My Christian grandfather, on the other hand, was a big-ass Zionist and Nazi-conspiracy-theorist. And you wonder why I’m confused!