multiple displays

Displays webcam pics in picture-in-picture mode.

Displays size of selected files/folders in Finder in menubar.

Displays icons of sub-folders as albums.

Displays RSS/Atom feeds in the menubar and sends updates to Growl.

Displays your keystrokes in a small floating window

Displays current tide or current for locations worldwide.

Displays 3D world model of IP address locations.

Screensaver displays cover art and track information.

For troubleshooting your Mac; displays important system details.

Menubar item displays CruiseControl servers status.