Quit any application automatically using a time delay of your choice. Especially useful if you listen to internet radio, music, etc., using any mediaplayer, whilst you're falling asleep. After shutting down the target application it quit itself.
CustomTunes for Skype is a Mac OS X tool that allows you to display the currently playing track in iTunes (and probably any other AppleScript supporting mediaplayer) in a custom format along with an (optional) message. UPDATE: Thankyou Softpedia!