tags got rendered instead of actually displaying it? Then you had to go manually replace any < or > characters with &lt; and &gt;. What a pain.

So, in comes this plugin. It automatically applies PHP's htmlspecialchars() to the code contents for display. It also fixes a bug of sorts where WordPress will apply paragraph codes inside of code tags when you have two line breaks.
Here it is in action (in a 

 though) and note that I typed it into the "Write Page" exactly as it appears:
Click here to go to Google.com.

Here's Google's logo:

Download link here which is also where you should leave any comments.