Seesmic Has To Be A Must Watch in 2008

The new video tools Seesmic is still in alpha but it is creating quite a stir around the blogosphere. The site currently has investors such as Michael Arrington and Robert Scoble and has to be a must watch in 2008. This site itself is quite unknown at present, so I was wondering if anyone has any more information about the company and product and if anyone is using their alpha and service.