OrangeBox is a lightweight, cross-browser, automated jQuery lightbox script. It can display images, quicktime videos, YouTube and Vimeo videos, Flash SWF files, and inline content (along with links in the inline content to open another lightbox).
Simple Top Posts is a super simple top posts widget based on comments. Choose weekly, monthly, or all time.
AddToAny: Share/Bookmark/Email Button helps people share, bookmark, and email your posts and pages using any service, such as Facebook, Twitter, Google Buzz, Digg, Delicious, and well over 100 more social bookmarking and sharing sites.
Exploit Scanner searches the files on your website, and the posts and comments tables of your database for anything suspicious. It also examines your list of active plugins for unusual filenames.