Created by Hugo Giraudel, this is how Batman should design his login form. This is for people who have wondered about the exact same thing.
Here’s a free PSD of the form as available in cssdeck.com. Furthermore, it was inspired by Virgil Pana’s work on Dribbble (see it here http://dribbble.com/shots/656020-Login).
The design of the form aims to create a shiny light effect on the top of the box. Also, it has a shiny black aesthetic much like the color that batman is known for. Click the link to get the code and to see a preview of the login.