My wife is a Board member for Project LEARN in Medina County, Ohio (just southeast of Cleveland). Last night at dinner celebrating my wife's birthday she was telling me about setting up the shelves in the new bookstore they're opening this week in our local community of Brunswick.
A majority of the books they receive as donations are fiction, and they shelve the books in alphabetical order, by author's last name. My thought was "aha - clustered index"!
She then went on to explain that they sometimes ran out of space on a shelf, and had to move books from the end of one shelf down to the next shelf, which would run out of space and they had to move books to the next shelf, etc. Again I thought "cascading page splits".
So I just had to explain to her the concept of FillFactor and if she'd just fill the shelves 80% full she'd have room for these additions. She said that their store wasn't like a traditional store with expected orders coming in so they could plan better. I said the same was true for database tables.
She called me a geek.