If your account is part of Google Apps for Education, or some other managed Google Apps account, you should contact your Google Apps admin. If it's just a normal Google account, I'm not sure there's much more that you can do.

Email is the most sought after account. All the password reset requests to your Bank, Twitter, Facebook, etc. are delivered to your email account. So when someone steals your email account, they've stolen all the others too. Go change those accounts to use your new email (if you can).