C# 4.0: MethodBag, ExpandoObject and other cool stuff

With the new features that are part of the DLR you can create plenty of cool stuff like Dynamic Method Bags, ExpandoObject, etc. More blogs, tutorials and articles will follow. And without doubt these new features have their place and will provide excellent value in those cases. However, always keep this in mind: "To a kid who gets a hammer for Christmas, everything looks like a nail." In economically challenging times you can prove your value even more by choosing carefully where, when and how you use new technology. Rumors has it that occasionally not using the newest features is the better choice ...