Embed ThickBox into your posts and pages.
This plugin integrates BibSonomy into your WordPress blog.
Embed JonDesign's SmoothGallery into your posts and pages.
Zeigt Trainigsdaten in deinem Blog an.
Update (17. November 2008): I keep this plugin here for reference but since WordPress 2.7 there's a [Plugin Installer](http://codex.wordpress.org/Vers