Mouad

If you want to embed YouTube videos in your posts but don’t want to copy the embed code every time, this plugin is here to help. 
This plugin integrates with the default WP editor (TinyMCE) and creates a YouTube button that can be easily used to embed YouTube videos. 
The only thing you need to embed a video is its URL. Any URL will do the job (long or short format).
Enjoy this simple yet useful plugin which takes you one step towards easier blogging.

TinyMCE YouTube Embed

This is a plugin for the default WP editor (TinyMCE) that allows users to easily embed YouTube videos in their posts.

Fahad Alduraibi

Do you write posts in different languages that have different directions? 
This plugin enables a feature in the post editor which allow writing texts in Left-to-Right and Right-to-Left directions in the same post (or page) so you can write in English (and any other LTR language) and also RTL languages like Arabic, Persian and Hebrew.
Simply look for the new buttons added to the post editor after installing the plugin. (See the screenshots for better understanding)
اضافة زرارين لشريط التحرير لتمكين تحويل النص للقراءة من اليمين لليسار مثل اللغة العربية والفارسية والعبرية
<a href="http://www.fadvisor.net/blog/2008/10/wp-rtl/" rel="nofollow ugc">More details</a>
<ul>
<li>Note: This plugin will not change the direction of the post title, since that is controlled by the theme.</li>
</ul>

WP-RTL

Adds two buttons to the TinyMCE editor to enable writing text in Left to Right (LTR) and Right to Left (RTL) directions.

TinyMCE YouTube Embed vs WP-RTL