This is an older clip, but for those of you looking for something a little different, there's a pretty sweet LED joystick top which lights up and turns different colors. Delusional2971 has a demo of it in action, and even if this isn't something you'd want to buy, it's still a nifty clip.
the down side on any balltop led mod is that those cable just keep twisting and stiffen up your stick after a while. it's ONLY for show and it should not be your main stick equipped with this.
Radioactive?