YouTube Widget: Feature your YouTube content in the right hand column.
Embedded YouTube Video: Easily put your YouTube video right in the body of your content.
Storage Options: Where to put your media and other large files (if not in YouTube).
Content Page with Embedded Video: A Flash player built in to your page (not for YouTube videos).
News Story/Feature Popup Video and Audio: Those media links under the titles of some news stories and features.
Photo Gallery: A powerful way to present images using photos you've uploaded to Cascade or to Flickr.