Zoho Notebook – Create, Aggregate and Collaborate.
Zoho Notebook is an online Ajax based web application where you can scribble, draw or add images, audio, video along with your content.
It has some cool features like
* Integration with Zoho Writer/Sheet
* Skype integration
* Collaborative editing and Sharing
* Record audio or video from ur computer into the page or upload a new one.
For more info check out here. You can watch a video here to get an idea of how this product/functionalities really works. Its in private alpha now and probably be released by the end of March. For now sit back and try other Zoho services here.