How to recover your Gmail password via text message

Google has added a new feature to recover password through SMS. Just go to your
Change password recovery options
and add your mobile number in the SMS section.

Next time when you forget your password just click https://www.google.com/accounts/ForgotPasswd?fpOnly=1&hl=en and enter your email address. You will get an SMS like this one shown below from Google

"Your google Account recovery code is : 123456 if you did not request this code, you can safely ignore this message."

Click this link to verify the reset code https://www.google.com/accounts/VerifySmsRecovery?Email=

And enter your new password ...

Source: http://gmailblog.blogspot.com/2009/07/tip-recover-your-password-via-text.html