On Blogger, there's no built-in tool to support my needs, so I ended up looking around for an easy and functional solution, and I found SyntaxHighlighter.
Neat, easy to setup (if you are a techie, of course, but not that hard for the average person as well), very nice results.
To setup the blog to use SyntaxHighlighter, you have to modify your html template:
Click on 'Proceed', then locate the following line:
<meta expr:content='data:blog.metaDescription' name='description'/>
All you need to do to have a code block in your post is to go in HTML mode, and surround your pasted code with the <pre></pre> tags like this: