Gravity Simulator Game
The idea of the simulator was to more or less create a stable solar system. That was what got me thinking about it.
I started working on that thing. But I got stuck on some of the math. Who wouldn't, right? So I found a set of scripts that some other person wrote that more or less answered many of my questions. So a lot of their ideas were incorporated into what I finally used on that page.
Also... Check out this Facebook page I'm working on, to get developers to trade ideas