viperchill

ViperProof allows you to show various aspects of social proof on your website, which will help you to get more blog subscribers. It allows you to show the number of: Facebook Fans, Twitter Followers, Blog Posts, Blog Comments and Monthly site visitors.
<a href="http://www.viperchill.com/" rel="nofollow ugc">ViperChill</a>, a blog on Viral Marketing, is the creator of this plugin. If you want to take your blog to the next level, you should read this post on <a href="http://www.viperchill.com/wordpress-seo/" rel="nofollow ugc">WordPress SEO</a>.

ViperProof

ViperProof allows you to show various aspects of social proof on your website, which will help you to get more blog subscribers.

westondeboer

My first public plugin that shows your websites google pagerank in the dashboard. Can be disabled in the screen options menu and moved around at will.
Works 2.7+, I don’t know if it works on anything below that.
Just really an example of how to put something into the dashboard.

Dashboard Google Page Rank

This plugin shows your websites google page rank

ViperProof vs Dashboard Google Page Rank