I was thinking of a will. When someone dies.. they usually leave assets behind in their will. But imagine if your wealth was stored as bitcoins? You could provide some kind of service where you act as the executor of a will. When you die you can have different amounts of bitcoins sent to different individuals/addresses .  To really do this though I suppose you would need to keep those individuals private keys stored in some offline database so you could access them.  This is just one small example of the possibilities. There are plenty of possibilities..........