I've been playing a lot of street fighter recently, and i've been wondering two things: how do you do ryu's dragon punch in Street Fighter 2 Turbo (and probably every other one, too) and how do you do special moves in Street Fighter Alpha 2? I know the dragon punch is :forward, down, forwarddown, punch, but it doesn't seem to work-if you go from forward to down, you either have to stop pressing the d pad for a split second (which doesn't seem to work) or move it in an arc, like a reverse quarter-circle-forward. I've done it occasionally by accident when trying to perform a hadouken, but i haven't been able to figure out how i did it.