// If this comment is removed the program will blow up 

'""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
'
'  NOTE: DON'T SCREW WITH THIS CODE UNLESS YOU REALLY UNDERSTAND IT!
'
'""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

不是注释，而是属性

[ThereBeDragons]

还有一个是我在IHttpHandler的实现中看到的

//What is this?
public bool IsReusable
{
    get{return false;}
}

在JUnit API中找到:

/**
 * ...as the moon sets over the early morning Merlin, Oregon
 * mountains, our intrepid adventurers type...
 */
public Test createTest(Class theClass, String name) {
    ...
}

#ifdef TRACE
#undef TRACE     /* All your trace are belong to us. */
#endif
#define TRACE ....

为什么你不应该将你的软件开发外包的一个经典案例:

public class Contact
{
    //...    

    /// <summary>
    /// Gets or sets the name of the first.
    /// </summary>
    /// <value>The name of the first.</value>
    public string FirstName
    {
        get { return _firstName; }
        set { _firstName = value; }
    }
}