Observations on my newly organized bookshelf

I took advantage of the recent need to pack and then unpack all my books to actually organize them for the first time ever. Fiction is now organized by author's last name, non-fiction by subject. Some observations:

• I appear to have a bias toward authors whose names begin with "A" or "B." Fully 24% of my fiction shelf-space is taken up by those two letters. To be fair, those two letters include Adams, Asimov, Atwood, Baxter, Beagle, Bear, Benford, Borges, and Brin, among others. 
• Frederik Pohl and Chaim Potok are next to each other, The Annals of the Heechee directly colliding with The Chosen. The fanfic potential is dazzling.
• H.P. Lovecraft and Lois Lowry are quite possibly the weirdest ship I have ever contemplated.
• Letters for which I have no authors: Q, U, V, X. I am open for recommendations.
• The alphabetically last author in my collection is Roger Zelazny.
• Probably the nerdiest shelf: The Riverside Milton, Barlowe's Guide to Extraterrestrials, two different, illustrated Star Trek guidebooks, The Elements of Harmony, A Tolkien Bestiary, and The History of Middle-Earth. In that order.
• I own a lot of RPG sourcebooks I've never used. Even more I've only used once, though of that latter group Slayers d20 at least was COMPLETELY worth it.