From Hak Mao, I've been Book Memed.
Number of books I own Judging from the volume they're taking up, approximately 1.5 tonnes, perhaps 5000. Not including the collections of SF magazines in book format, another thousand or so.
Last book I bought Just blew $185 at Galaxy Bookshop, last one on the receipt was "Darwin's Watch (The Science of Discworld III)" by Pratchett Et Al. in hardcover.
Last book I re-read Herodotus : the Histories
Five books that mean a lot to me