I think I have my brain halfway wrapped around the Dynamic Types concept in C# 4, but can\'t for the life of me figure out a scenario where I\'d actually want to use it.
From Walter Almeida's Blog: a scenario of use of the dynamic keyword in C# to enhance object orientation:
http://blog.walteralmeida.com/2010/05/using-the-dynamic-keyword-in-c-to-improve-objectorientation.html