Now E-Readers are so popular, and less books are being printed each year, which ones (standalone or series) would you want to have on your shelf, if printing stopped tomorrow? Aside from the obvious classics such as Shakespeare, Dickens etc. I mean more modern books really.
I would have Harry Potter, His Dark Materials, The Red Tent, and the Guernsey Literary and Potato Peel Pie Society (I know it may be frivolous, but I adore it, and it's one of the few paper books I own, and will never get rid of it!).