It is the story of a woman who's husband is in a coma, but before he was hurt he worked as a contractor and sealed up rooms of the homes he has worked in. He sealed up kitchens, bathrooms and closets, but before he did so he covered the walls with rambling and explicit messages. All of that is interesting enough, but none of Chuck Palahniuk's books are just what you read in the description. There is so much more.
I think Diary: A Novel is probably a great introduction into Palahniuk. It seemed much gentler than Choke, but clearly in his classic style. I would have to say (in a purely Palahniuk-like phrase) that Diary: A Novel is the Vaseline-d Palahniuk experience. It might be the place to start if you have any interest in finding out what all buzz is about.