For years I've been preaching to HR and talent pros all over the country that the easiest, cheapest and most effective way to increase engagement and loyalty in your employees is to write their parents a thank-you note.  Now, the CEO of Pepsi, Indra Nooyi, has come out and admitted to doing this with her direct reports. From a recent Fortune article:

"I became CEO in 2006, and it was a matter of some pride to my family, but not too much. So I went home to visit my mother in Madras, in India, and stayed with her. And she woke me up at 7 o'clock and said, "Come on, get ready."  I said, "I'm on vacation, how about noon today?" She said, "No, people are coming to visit, so get up."

So she made me sort of dress up and sit there, and then a steady stream of third cousins, fifth cousins, 20th cousins, three-removed, all started to show up. And each of them would walk into the house. They would sort of look at me and say, "Oh, hello," and then go to my mom and say, "You should feel so proud that you brought up this daughter, and you brought up your child so well."