It's a book about reading books, metareading, if you're into that faux-intelligentsia nomenclature for our thought processes. Nick, the author of High Fidelity and A Long Way Down, writes a monthly column for The Believer and fourteen of these essays are reprinted as this book.
There's just something about his way of speaking, how he discusses Assassination Vacation (he has a bit role as "the smoker from London") then Man on the Moon, a children's book about an astronaut who commutes to the moon, then lambasts his own magazine for failing to appreciate books with negative emotion (shan't have any books like that in -this- magazine, don't you know) and replacing his column one month with pictures. Pictures! The horror.
To be very honest, it's a fine romp of a read. He's witty and entertaining, and who knows, you just might get a book recommendation or two out of it. Especially if you like thrillers.