Ever wanted to display some code on your blog only to find that the HTML inbetween the
<pre> tags got rendered instead of actually displaying it? Then you had to go manually replace any
> 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.
More details and an example here: http://www.viper007bond.com/wordpress-plugins/code-display/