Mostly in some sort of subject order - but I just moved and they're in less order than before, because it was important to get them up on shelves and out of the garage. I have several bookshelves in my office filled with religion, history, philosophy, music, art, mythology, folklore, poetry, fiction, literature (there's a difference in our home), general reference, cookbooks, biography, travelogues, archaeology, palentology, etc.

I have my "coffee-table" books on a high shelf now that I share my world with 3 cats who think the coffee table is theirs. My collection of SF & Fantasy short stories collections is in its own cabinet (14,000 + different short stories) as is my Orlando/Central Florida history collection (my job). They are all grouped, with really big books over out of the way, but not alpha-ed within the category.

I spent 3 years shelving for the Orlando Public Library (4 million volumes) so I cna be organized when I need to be. My girlfriend, with whom I just moved in is stunned by the amount of books I have. She's a reader, just not a collector. She's also stunned by the 600+ CDs (200+ Celtic), 35 mm & 2 inch slides, 8mm & 16 mm movies and dozen scrap books I brought into her home.

I love media...