AJ Troxell

Three ways are provided to insert the shortcode. The value “xxxxxx” represents your Gist ID, and “name” is the filename of the file within the Gist.
<ul>
<li>Insert [gist id=”xxxxxx” file=”name”] manually.</li>
<li>By using the HTML Editor shortcode button.</li>
<li>By pressing ctrl+alt+g. *You can place these shortcodes in pages, posts or any custom content.</li>
</ul>

GitHub Gist Files Shortcode

A Wordpress plugin which will insert a specific file from a Gist using the shortcode [gist id="xxxxxx" file="name"].

arch1t3ct

Retrieves your public Gists and displays them in an ordered list.
Features include:
<ul>
<li>Item count.</li>
<li>Length of description.</li>
<li>Show comment count.</li>
<li>Show creation date.</li>
<li>Show mimetype icons.</li>
</ul>
Supported mimetypes:
<ul>
<li>C++</li>
<li>C</li>
<li>C#</li>
<li>ColdFusion</li>
<li>CSS</li>
<li>HTML</li>
<li>Java</li>
<li>JavaScript</li>
<li>Lua</li>
<li>PHP</li>
<li>Python</li>
<li>Ruby</li>
<li>SQL</li>
<li>TeX</li>
<li>XML</li>
</ul>

Better Github Gists Widget

A highly configurable github gists widget.

GitHub Gist Files Shortcode vs Better Github Gists Widget