reading on the sly

There was a book on top of my husband's commuter backpack this morning, encased in one of the very bright, patterned book sox my daughter likes. It was The Time Traveler's Wife. Seems that the husband wants to read the book before we see the movie, but does not want to be SEEN reading it on the train. So cute it really makes me love him even more. (Oops - he does not appreciate being described as "cute," so please don't tell him.) Have you read a book recently that you would prefer no one knew about? Or are you planning to read something on the sly in the near future? (Think Dan Brown.)