SlideRocket has everything you’d expect from a presentation app — powerful slide and presentation authoring tools, pretty transitions and image and video manipulations and animations, charting and table creation, and the ability to import PowerPoint files (export is coming soon). It also has some features you wouldn’t necessarily expect in an online application, like the ability to import your own fonts, a plugin architecture that will allow third-parties to create their own transitions and effects, and an offline Adobe AIR-based player (a full AIR-based version of the editor is also planned).
But where SlideRocket really shines it in its approach to community, sharing, and collaboration. Already active in the application is the concept of an asset library, where you can pull in assets (images, video, etc.) from any source, as well as directly from the web. Right now, SlideRocket searches Flickr and Yahoo! Images from inside the app and can add images it finds to the user’s asset library. (link)
Sign up for the limited Beta here.