Busy again, so just another screenshot. This maybe gives a better sense of some of the things in yesterday's screen shot. Lots of fun figuring out how to do [dozens of] smooth, multicoloured particle trails without killing a 60fps frame rate.
And something else I did yesterday: an app on Wonderfl to compare the performance of Dictionary, Array and Vector classes. It was surprisingly popular, at one point topping the 'Daily code ranking' list (which maybe says something about Wonderfl).
I can't claim credit for the code which was contributed by GroZZleR in this FGL thread
Where the interesting results are discussed at length.