All is forgiven, I just wanted to point it out :-) The first one reminds me of an art project we did quite a while ago: An electronic valve inside a tap would

All is forgiven, I just wanted to point it out :-) The first one reminds me of an art project we did quite a while ago: An electronic valve inside a tap would open to let out a droplet of water twice every second. A strobe would be synced up with the valve, and light up the droplets of water falling to the ground. By carefully timing the strobe you could make it appear that the droplets were falling upwards into the tap. It looked really cool. Great fun - got me laid too :-)