Ronny Sherer

Enable LTR in admin content area. Click the admin bar button to switch between RTL & LTR. This plugin adds a button to the admin bar. Clicking the button switches between RTL & LTR text direction of current page content only. The LTR/RTL state is saved in current browser only.

LTR  RTL Admin content

Great

Enable LTR in admin content area. Click the admin bar button to switch between RTL & LTR.

Rami Yushuvaev

This plugin allows you to add random jokes from <a href="http://www.bdihot.co.il/" rel="nofollow ugc">bdihot.co.il</a> website, using the wordpress widget systems.
Display random jokes everywhere on your site. Add as many widgets as you need. Set each widget it’s individual set of options.
Features:
<ul>
<li>Dashboard widgets – random jokes in the back-end for the site operators.</li>
<li>Sidebar widgets – random jokes in the front-end for your users.</li>
</ul>
For more information, installation instructions and screenshots, visit <a href="http://www.bdihot.co.il/wordpress_plugin/" rel="nofollow ugc">plugin homepage</a>.

Random Joke (Bdihot.co.il)

This plugin allows you to add random joke to your site using wordpress sidebar widget.

LTR RTL Admin content vs Random Joke (Bdihot.co.il)