This plugin allows for easy addition of highlighted code with the [code lang=””] tag supporting over 10 languages
<h4>Feature summary</h4>
<ul>
<li>100% client side, no server dependency</li>
<li>Multiple languages support</li>
<li>Wide browser support</li>
<li>Very lightweight</li>
<li>Easily added with the shortcode [code lang=”language”][/code]</li>
</ul>
<h4>Languages Supported</h4>
<ul>
<li>C++ (cpp, c, c++)</li>
<li>C# (c#, c-sharp, csharp)</li>
<li>CSS (css)</li>
<li>Delphi (delphi, pascal)</li>
<li>Java (java)</li>
<li>Java Script (js, jscript, javascript)</li>
<li>PHP (php)</li>
<li>Python (py, python)</li>
<li>Ruby (rb, ruby, rails, ror)</li>
<li>Sql (sql)</li>
<li>VB (vb, vb.net)</li>
<li>XML/HTML (xml, html, xhtml, xslt)</li>
</ul>

The Ultimate Syntax Highlighter

A very simple and easy to use plugin for syntax highlighting code using a short-tag

leo108

This plugin not only provides you syntax-highlighter , but also add a textarea and a button in the post page . 
you just have to select the language , add code to the textarea and click the ‘OK’ button , and you will get 
your code highlighted in your atricle. 
这个插件不仅仅提供了代码高亮，还在编辑页面增加了一个代码框和一个按钮，你只要选择好你的代码语言，把代码贴入代码框， 
再点击一下OK按钮，你的带高亮的代码就会被插入到文章里去。
Supported Languge: 
 Bash 
 C 
 C++ 
 C# 
 CSS 
 Delphi 
 Diff 
 Erlang 
 Groovy 
 HTML 
 Java 
 Javascript 
 Perl 
 PHP 
 PowerShell 
 Python 
 Ruby 
 SQL 
 VisualBasic 
 VB.NET 
 XML

Syntax Highlighter++

You can add code with syntax highlighter easily when you are editing an article. 方便的代码高亮插件。

The Ultimate Syntax Highlighter vs Syntax Highlighter++