LoginToboggan

Most notable feature is being able to login with your email address.

"The LoginToboggan module offers several modifications of the Drupal login system in an external module by offering the following features and usability improvements:

  1. Allow users to login using either their username OR their e-mail address.
  2. Allow users to login immediately.
  3. Provide a login form on Access Denied pages for non-logged-in