Kishore

This plugin is using Google Pagerank API to fetch the Google Pagerank of any webpage and the pages of your blog Features
<ol>
<li>Display page rank of you blog</li>
<li>Give your visitors a tool to check pagerank</li>
<li>Simple installation</li>
<li>Ajax based Pagerank checker</li>
</ol>

Kish PR

A plugin to check Pagerank of any website or webpage. Display pagerank of your blog pages

byybora

Google PageRank Display shows your site pagerank instantly and you can change style from General Options. 
more than 130+ pagerank buttons & badges. 
 * Install files 
 * Activate the plugin 
 * Go General Options [<code>options-general.php?page=gpdisplay</code>] 
 * Choose style you like 
 * Update option
<ul>
<li>And add this code your theme // <code><?php show_gpdisplay() ?></code></li>
</ul>
Features:
<ul>
<li>Real Google Pagerank : Shows real google pagerank, not fake</li>
<li>Many Style : There are 134 different pagerank button and badges</li>
<li>Automatic : just you change style from option</li>
<li>Fast : Loading pagerank fast, get image remotely.</li>
<li>Get your site page rank instantly</li>
</ul>
Details: <code>http://www.getrank.org</code>
<h3>Arbitrary section</h3>
See homepage for updates <a href="http://www.getrank.org/" title="GetRank" rel="nofollow ugc">http://www.getrank.org</a> .
<blockquote>
Instantly Check Free Your Site Google PageRank **
</blockquote>

Google PageRank Display

Check your site free google pagerank value with more than 130 pagerank buttons and badges

Kish PR vs Google PageRank Display