I’ve had a few versions of my PictureSlides to create JavaScript slideshows, but now it has been completely rewritten and jQuery-optimized with some new control and features.
Some time ago I released PictureSlides, a DOMAssistant plugin to create compelling slideshows and thumbnail galleries, with a number of customizable options. Recently, I ported PictureSlides to also work with jQuery, so if you want to do something spiffy with images, I recommend you check it out!