New Plugins
WP-ZoomImage With CopyProtect
You can pop up an image or thumbnail by just clicking on it and it will disappear when you click it again
Titled Comments
Hikari Titled Comments enables each comment to have a title, so that commentators can give a subject meaning to their comments.
Scroll to Top Plugin
Integrate a jQuerry scroll to top control

More at: http://weblogtoolscollection.com/archives/2010/03/11/wordpress-plugin-releases-for-0311/