I really enjoyed Horrorstör, by Grady Hendrix.
At first I thought it was going to be utterly ridiculous. A horror book inside the walls of a different named IKEA, but BAM; it blew my mind.
Knowing and loving IKEA so much, I was able to feel as if I was in the story. I could picture each department and it made it all the more creepy once the horror aspect kicked up.
The furniture and quirky descriptions of them were a hoot. It really brought the story and the store together.
I highly recommend.