Google wave is, in two words, email-reinvented, but it’s also much more than this. Up till now everyone was using the classical email structure that was developed a long time ago. Since then there’s been a lot of development and innovation on the web. This demands a new better way to connect and share stuff online; Google wave is the solution. Unlike other tutorials, that were long and confusing, this video below will let you know what exactly is Google Wave by showing you its practical use in just under 8 minutes. Enjoy!
Earlier, Google made an 80 minutes presentation for the Developers at Google I/O which thoroughly explains the rest of the features.