SlideRocket gets more exposure each day -- and the product gets better too. I have been working with this online presentation product for a long while now, and the implementation is awesome.
I do miss a few things -- surprisingly, I miss PowerPoint 2007's tabbed Ribbon interface since SlideRocket options do require many clicks. And I wish they built in some Flickr authorization so that I can access all my Flickr photos from my account. As of now, I can only access the public photos. And my minor rants may not be too fair, since this is still a beta product.
The screenshot below shows the SlideRocket interface -- click on the screenshot to view a larger picture.
SlideRocket is based on Adobe's Flex technology, and Josh Catone provides a great intro to the underlying architecture of SlideRocket on his ReadWriteWeb blog...
Josh Lowensohn provides another walkthrough on the Webware site...