Here are some great plugins for highlighting the code. I hope you will like them and use them wheve-ever needed.

1)  CodeColorer

Features

• line numbers
• automatic links to the documentation inserting
• code block intelligent scroll detection (short code would have short block, for long one block height would be fixed and scrollbar would appear)
• predefined color themes (Slush & Poppies, Blackboard, Dawn, Mac Classic, Twitlight, Vibrant Ink)
• syntax colors customization in CSS file
• syntax highlighting of the code in comments
• code protect from mangling by Wordpress (for example, quotes, double-dashes, etc would look just right as you entered)

2) SyntaxHighlighter Evolved

SyntaxHighlighter Evolved allows you to easily post syntax-highlighted code to your site without loosing it’s formatting or making any manual changes. It uses the SyntaxHighlighter JavaScript package by Alex Gorbatchev and a bit of code by Automattic.

3) FV Code Highlighter

Features:

• Renders XHTML, CSS, XML and PHP
• Default look: Dreamweaver style
• Customizable look of codes and code box

4) Raw html

This plugin lets you use raw HTML or any other code in your posts. One way to use it is to wrap a part of your post in special tags (below) to prevent WordPress from converting newlines to HTML paragraphs, escaping apostrophes and so on. This is very useful if you need to add a CSS block or JavaScript to your post.

5) SyntaxHighlighter Plus

It supports the following languages:

• Bash — bash, sh
• C++ — cpp, c, c++
• C# — c#, c-sharp, csharp
• CSS — css
• Delphi — delphi, pascal
• Diff — diff
• Groovy — groovy
• Java — java
• JavaScript — js, jscript, javascript
• Perl — perl, pl
• PHP — php
• Plain text — plain, text
• Python — py, python
• Ruby — rb, ruby, rails, ror
• Scala — scala
• SQL — sql
• VB — vb, vb.net
• XML/HTML — xml, html, xhtml, xslt