Java SE (Java Platform, Standard Edition)

Does anyone have a nice example of easter egg code laying around?

I'm thinking about taking some of the administrative things out of the regular menu options but want to leave the functionality there but hidden.

Note: This is not security through obscurity, so don't tell me its not a good idea. It will still require a password as it does today.

I'm thinking something like if the main window has focus you just type a special sequence of characters and that will trigger something.