Relax while testing your reaction time reflexes.
http://scratch.mit.edu/projects/14318317/
I didn't program this game from scratch (I modified a template), but I programmed it using Scratch. [Haha.] Anyways, "Scratch" is a free open-source programming language from MIT, a "visual" programming language one might call it (looking at it though, it's not exactly like LabVIEW, it's more like using blocks to replace some of the tedious-ies of text-based programming languages). You can read more about Scratch and find more links on Wikipedia.
Goal: up to how high a speed can you keep the balls from hitting the ground?