@Iluviaporos - It's really annoying when that happens. I'm not sure if it would count as the same level of conditioning as the dogs who salivate when they hear the bell though.
Reading this made me try the blinking reflex. It's weird that you can't really control it at all. They say that's why you can't kill yourself by holding your breath. Even if you can hold it long enough to pass out, your body will automatically begin to breathe again once you are unconscious and unable to control it. I guess it makes sense that you should have that reflex. Apparently dolphins don't have it and they have to sleep with one side of the brain awake all the time to bring them to the surface to breathe. If they had a reflex that made them breathe, they could drown.