“Youtube ToolTip” is a simple plugin, which changes all your links of “youtube” on a fast preview for the convenience of your readers.
Modifying all the links and using “jQuery” shows an attractive & modern blog.
Also use “qTip”, qTip is a tooltip plugin for the jQuery framework. It’s cross-browser, customizable and packed full of features! 
qTip is licensed under the open source MIT license, which allows you to use the script for whatever you want, whenever you want, however you want, as long as you include a copy of the license!
For more information about this plugin visit http://javiergalicia.wordpress.com/2009/07/03/youtube-tooltip-to-wordpress/

Youtube ToolTip

"Youtube ToolTip" Click on any of your links to get a quick preview of the youtube video.

Manoj

Allows you to create multiple sub-pages in a batch/bulk manner saving time at any time in your WordPress site. 
This plugin will give you a startup screen in which you can add as many sub pages in a quick manner and then by clicking one button will create all the sub pages for your selected page as parent.

Easy Bulk Subpage Creator

A handy tool for bulk sub page creation.



Excellent

A handy tool for batch creation of sub-pages for any page.

Youtube ToolTip vs Easy Bulk Subpage Creator