Everyone loves a good old western shootout, right? (I don't :P).
This game is pretty simple, point the mouse at the lower left of the window, wait till it's time, then start shooting at your opponent! It's all pretty unpredictable, and with the physics model doing weird things to the bodies as they're getting shot, I find it fairly amusing!
I only posted it because I can't stop playing it, so it's gotta be worth something!
[EDIT] In the year 2017 we actually received an email about a HTML5 version for modern browsers over here. Many thanks to Katie for reporting this!