The o'Slider plug-in has a lot of features of a regular slider. Some of them are auto play, stop on hover, show/hide navigation, bullets list or thumbnails for a navigation, captions and in-line content. But the main cause for creation of the plug-in was to give websites' users amazing live-background experience.
Use as many layers as you want. Set up offset, direction and backgrounds. Check the 'Examples' page to wake up your imagination.