A man running a little behind schedule arrives at a picture theatre, goes 
in to watch the movie that has already started, and as his eyes adjust to 
the darkness, he is surprised to see a dog sitting beside its master in 
the row ahead, intently watching the movie.  It even seemed to be enjoying 
the movie:  wagging its tail in the happy bits, drooping its ears at the 
sad bits, and hiding its eyes with its paws at the scary bits.  After the 
movie, the man approaches the dogs owner,
"Jeez mate, your dog really seemed to enjoy the movie.  I'm amazed!"
"Yes, I'm amazed also," came the reply.  "He hated the book."