Some Wordpress plugins are often updated, which is good think. Plugins that are updated are 100% compatible with last Wordpress version and they also are the most secure possible. A plugin that has not been updated for a long time might not work with last Wordpress version and might create a security breach for you website.
For users of qTranslate, allows you to set multi-lingual META tags and a <title> override for your posts and pages.
Fine grained control of how many of your posts appear on each of the various WordPress archive pages.
Provides a thumbnail area in Your Profile, for users to upload & crop new images in an overlay to be saved and stored to their profile.
WP-Featured Content Slider is a must have Plugin to smoothly show unlimited Posts/Pages in a nice jQuery Slideshow.
Adds a widget that displays uploaded media related to a post or page in the sidebar.
Allows to display the comments in reverse order. Latest comment first, oldest last.
Automatically add links on your posts to popular social bookmarking sites.