I just installed a syntax highlighting plugin and below are the results. Usually installing and configuring plugins isn't such a chore, but this time it was slightly more complicated.

 
<h1>Sample Heading...</h1>
 
This is just a bunch of meaningless text
<ul>
<li>List Item One</li>
<li>List Item Two</li>
<li>List Item Three</li>
<li>List Item Four
<ul>
</ul>
</li>
</ul>
 

There were a couple of code related errors. For some reason the path to the 'geshi.php' file was wrong. Or at least it seemed. Without changing a line of code and only by refreshing the screen the errors magically disappeared. Unfortunately I spent 30 minutes trying to figure out why the path to geshi.php was incorrect before refreshing the page.

Also, if you choose to use this plugin, there's a good chance you'll have to write some code to style the 'pre' tag. Take a peek at what I used:

pre {
    font-size:11px;
    width:100%;
    overflow:auto;
    border:1px dotted #ccc;
    padding:5px;
    }
 

Nice plugin! Hopefully over the next few years (or more), I'll have the chance to put it to good use.