The video is quite long (1+hr, 300+mb). I downloaded it and viewed it. Looks like it is Google’s next big product. Email has been invented for 40+ years. They are attempting to re-invent email as if it were invented in today’s time. As always, based on cloud computing (hosted by google), uses html5 as the platform. It combines email, photos, IM, discussion board, etc., all into one interface. The API is going to allow other sites to embed and use it as well. Super cool!