Mark (podz)

Displays random psots on the sidebar of your blog, ideal for keeping visitors on your site longer and offering more reading.
This widget is also ideal for SEO as it increases the number of pages interlinked on your site, helping the search engine spiders crawl your site more efficiently.
Features:
<ul>
<li>configurable number of displayed records;</li>
<li>conclusion quote, or just the title;</li>
<li>display in a list or any other form (the tags are set).</li>
</ul>

RandomPosts Widget

Displays random psots on the sidebar of your blog, ideal for keeping visitors on your site longer and offering more reading.

DionRodrigues

A simple widget that displays a random post from your blogroll, or from any custom post type in your blog, rather then the standard functionality of the built in recent post widget.

Show a Random Post Widget

A simple widget that displays a random post from your blogroll, or from any custom post type in your blog, rather then the standard functionality of t …

RandomPosts Widget vs Show a Random Post Widget