Recover Your Google Account Password Via SMS

As per official gmail blog :

To turn this on for your account, just sign in, select ‘Change Password Recovery Options,’ enter your cell phone number and click ‘Save.’

Next time you forget your password, enter your username on the password-assistance page, and Google will text you a recovery code. No need to check another email account or even leave the page.

Screenshots :

Right now this password recovery option via SMS has been made available in U.S only.