Apparently All of the Books in Existence Still Aren't Enough for Me...

Here's a really cool website I've just come across: it's a catalog of books that don't exist. Or rather, that exist only in other books. For some reason, I find this idea deeply, endlessly fascinating. And I want a copy of the Time Traveller's Handbook of 1001 Tense Formations. Also Nameless Horrors and What to Do About Them. And Universes, Parauniverses, and Planes - Assembly and Maintenance: A Creator's Manual.