The C# version:
class A{const string b=@"class A{{const string b=@{1}{0}{1};static void Main(){{System.Console.Write(b,b,(char)34);}}}}"static void Main(){System.Console.Write(b,b,(char)34);}}
To refer back to the question, click here.
Now, try this in JavaScript.
This is actually less so a BrainSharpener and more of an exercise for people who are learning new languages. The official word for this type of self-replicating program is called a "quine". Puts a new twist to writing your first program in a new language (as opposed to the typical "Hello World" program). If you'd like to jump on Ruby, try writing a quine.