I've got the opposite problem of some people. I know what books I want to buy for the few friends I'm buying books.
... But I don't know what to ask friends to buy me. Books-wise. And about three people have now asked me what I want for Christmas.
My favorite authors: Margaret Atwood, Daphne Du Maurier, J. K. Rowling, James Herriot, Ernest Hemingway, Michael Crichton, Robin McKinley, Barbara Kingsolver, Janet Fitch, Richard Llewellyn, Norah Lofts, Garth Nix, Karen Moline, Anne Rice, Sir Walter Scott. Plus several more. Haha.
My favorite types of books: 1880s-era children's lit (The Secret Garden, At The Back Of The North Wind), urban fantasy (Charles de Lint), post-apocalyptic fiction (Chuck Palin... yeah, I can't spell it), historical fiction (okay, I like that a LOT).
I own The Blind Assassin & The Handmaid's Tale (and Oryx & Crake in ebook form), almost everything Du Maurier's written, most of the HP books (and it's not top of my list to get the rest of them in paper form), I think all of Herriot's books, about 8 Hemingway books (God I love that man's writing...), The Great Train Robbery & Jurassic Park, White Oleander, How Green Was My Valley (and I dislike the sequel), about 5 books by Norah Lofts, Sabriel (and I don't really want to dig further into the series at this time, although I love it), Belladonna, several Anne Rice books (The Feast of Fools is one of my favorites) plus my roommate's AR collection, Ivanhoe & The Fortunes of Nigel - just talking of the books by the authors listed here.
My total book collection numbers about 200 currently. So yeah.
I kinda want some new authors, by way of new books. I'm also semi-obsessed with both the Victorian era (1880s especially for some reason) and the 1920s. A book set in either would be interesting.
Thanks :) Hope this wasn't as annoyingly long of a post as it feels like.