House of Leaves is by Mark Z. Danielewski. It’s clearly a dark book; very sophisticated in its presentation, with layers on layers of meaning and narrative. I’m reading this now because it was recommended by Old Hat on CVGamers. I first remember reading about this in Poe’s liner notes for Haunted. [Side note: the relationship between the two is mentioned on the Haunted wikipedia page.
I’m not far into it yet, but it looks very promising.