There is a really cool new feature in Visual Studio 2013 that lets you paste JSON or XML and create a class hierarchy from it. For example, if you have the following JSON:

{
"People" :[{
    "First Name" : "John",
    "Last Name" : "Koerner", 
    "Address" : {
        "Street" : "1234 Main",
        "City" : "Somewhere",
        "State" : "MI",
        "Zip" : 12345
    }
  }]
}

You can open up a .cs file in VS 2013, and under the Edit->Paste Special menu, you have the option to Paste JSON as Classes, which will create the following class hierarchy:

public class Rootobject
{
    public Person[] People { get; set; }
}

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public Address Address { get; set; }
}

public class Address
{
    public string Street { get; set; }
    public string City { get; set; }
    public string State { get; set; }
    public int Zip { get; set; }
}

Even though this is a really small feature, it's just one of those small things that just makes working in visual studio that much easier.