Catch the Conscience of the King

Plays within plays, stories within stories, dreams within dreams....

I'm blogging about this wonderful device in fiction on my Candy's Monsters blog today:

http://candysmonsters.com/2013/04/23/...

The play is the thing to catch the conscience of the king!

Fellow writers — have you ever used this device in a story or novel? Readers — how do you feel about it?