There is no doubt Gmail is the most rapidly growing free email client and there are several reasons behind this, like faster email, easy interface, strongest spam control etc. But now Google brings another superb feature for Gmail users.
Gmail motion, now your every move has some mean for Gmail. If you are using a computer with camera then you no more need to type email with your keyboard as with your specific moves you can tell Gmail what you need to type in email. Still confuse then watch Gmail Move introduction in this video.
As you read it and watch it all. I must tell you one thing… its look a like an April Fool Joke to me from Google 