I'm reading House of Leaves by Mark Z. Danielewski. It's a little like Mezzanine by Nicholson Baker. The author puts layer upon layer into the story, so at times you aren't sure which way you are reading, forwards or backwards. A novel written about an editor who is editing a "paper" written by an old man about a movie made by a photographer who filmed his house...complete with Introduction, Footnotes, (including footnotes on footnotes) Appendices and Index. So far its still "got" me, but chapter V is a bit tough--all that latin and quoting on quotes. Thomas told me that it's not his fault if I have a few sleepless nights...

UPDATE:
I paused in my reading of this when the "house" devoured a person...