I made a little module that lets anyone add their own Easter egg or cheat for when a player enters the Konami code.
DOWNLOAD HERE (http://www.mediafire.com/file/ujc462mlzspossb/konamicode.zip)
No special extras other than the fact that you can modify it slightly depending whether you want the code to be followed by the enter key or not.
There's nothing needed to be done, just import the scripts and insert your Easter egg.
It's pretty basic stuff, and in fact I just did a forum search and saw that it has already been done in the forums (much more elegantly), but I couldn't exactly copy them, so I've kept my version as it is. It does the job well, and it might save someone 5 minutes of work :)