Speaking of herding
sheep, you might
like to have a go at a BBC game that tests your reaction time in what I can only say is a very odd way: various (cartoon)
sheep graze peacefully at the left of the browser window until suddenly one of them makes a break for greener pastures; your job is to
click a button that shoots a tranquilizer dart at the renegade; at the end of your efforts, you're told what your reaction time is.