Rob Saurini

It’s simple enough to embed a Gist, but the default embedded Gist behavior isn’t as easy to read as it could be. I’ve added line numbers and alternating line colors in order to give the gist maximum readability.
Use
<ul>
<li>You can use the shortcode [pretty_gist id=”gist_id“] to embed the pretty gist directly into a post</li>
<li>You have the option to change the default colors in Settings > Pretty Gists</li>
</ul>

Pretty Gists

Gives you the ability to add Github Gists to your site decorated with line numbes and alternating line color.

GitHub Gist WordPress Plugin allows you to embed <a href="http://gist.github.com" rel="nofollow ugc">GitHub Gist</a> snippets with a [gist] tag, instead of copying and pasting HTML. For example, to embed the <a href="http://gist.github.com/447298.js?file=github_gist_wordpress_plugin_test.txt" rel="nofollow ugc">github_gist_wordpress_plugin_test.txt</a> file from <a href="http://gist.github.com/447298.js" rel="nofollow ugc">gist: 447298</a>, fill in the id and file attributes in the [gist] tag:
[gist id=447298 file=github_gist_wordpress_plugin_test.txt]
or
copy the embedding JavaScript code from GitHub and directly paste it in the body of the [gist] tag:
[gist]<code><script src="http://gist.github.com/447298.js?file=github_gist_wordpress_plugin_test.txt"></script></code>[/gist].
The [gist] tag also expands the content of the embedded Gist and wraps it with “<code><noscript><code><pre></code>” so that search engine spiders, users with javascript disabled and users reading your blog through RSS will still see your code in a blog entry.

GitHub Gist WordPress Plugin

GitHub Gist Wordpress Plugin allows you to embed GitHub Gist snippets with a [gist] tag, instead of copying and pasting HTML.

Pretty Gists vs GitHub Gist WordPress Plugin