Our Widgetkit gets some new features with the latest Beta 4 version. With the new Gallery widget you can easily create a image slideshow. Just select the folders where your images are stored, set a size, pick a style and you are done. The new Media Player lets you embed videos in the new HTML5 way but also adds a flash fallback for unsupported browsers.
For all ZOO users we added a plugin which allows you to create Widgetkit slideshows from ZOO items.