That's the best use I can imagine. I love it.

Whenever I visit peoples homes, I look at their bookshelves. I pick one book that may indicate something in common, and I make a comment or ask a question. It rarely fails to start a great conversation. And when you're fixing their computer and waiting half an hour for a malware scan to finish, and the customer insists on sitting there watching, such conversations are life savers. Plus, you learn a ton.