"The mouse and keyboard were invented before the Internet even existed. Since then, countless technological advancements have allowed for much more efficient human computer interaction. Why then do we continue to use outdated technology? Introducing Gmail Motion -- now you can control Gmail with your body!!!"
Google Gmail Motion actions (click for larger image)
Gmail motion even claims to be able to increase productivity by 12% - Paul McDonald explains more:
Another nice example of Google April Fools entertainment!