I played that to my cats once. Never again.
Fuckers were launching themselves at the screen.
( brb Monkhouse Stampede, Thu 23 Jan 2014, 21:53, archived)

the best bit is when one of them flies away and the cat follows the expected trajectory off the edge of the screen and across the room, then looks a bit puzzled for a while
( vladimir The Days Pass Quickly Immersed in the Shadow of Et, Thu 23 Jan 2014, 21:56, archived)