Personally, my work day consists of waking up, applying the necessary doses of nicotine and caffeine to get my motor running,
then walking the 15-odd feet from my couch to my office. The point being that I'm not necessarily looking for a time-waster at the office. But if I did, say, work as an insurance adjuster or some nonsense like that, and had to sit in a cubicle farm all day, I'd be extremely
pleased to come across this.
In a nutshell, it's a 909 done entirely in Flash. And, surprisingly, it's not bad. Source code is provided, and if you go to the front page, you'll see there are a bunch of other fun little musical toys, including a 303 and a couple other synths (although none are as good as this one), plus some fun visual stuff.