I've been pretty bored lately, so to amuse myself I made a spreadsheet of all my books and made some super-awesome charts from it! I noted author, year published, format, whether it's a single book, part of a series, or a collection containing multiple stories, and two genres for each. The genre part took some serious thought, it was a little hard in some cases to limit genres to two. I also sometimes changed my original genre names so I could group more titles together.
I excluded comic books, books of sheet music, as well as a small stack I've been meaning to get rid of but haven't gotten around to yet. Also excluded a couple of duplicates, which I have by accident, and dictionaries.
A few volumes I have contain multiple books that were originally published individually. I counted those titles individually. Collections of short stories are counted as one book.
While going through everything, I was irritated to discover I'm missing a few books I know I used to have!
Total number of titles: 247 (total number of volumes: 241)
Top genres: Fantasy (32.8%), Science Fiction (13.4%), Spirituality (10.9%)
Top authors: Stephen King (8.9%), Orson Scott Card (6.5%), Margaret Weiss & Tracy Hickman (6.1%)
Range of publication: 500 B.C. - 2012