Tutorial Konami Code
var kkeys = [], konami = "38,38,40,40,37,39,37,39,66,65";
$(document).keydown(function(e) {
kkeys.push( e.keyCode );
if ( kkeys.toString().indexOf( konami ) >= 0 ) {
$(document).unbind('keydown',arguments.callee);
// do something awesome
$("body").addClass("konami");
}
});