Lets blow one another's minds by posting the trippiest optical illusions we can find. I've been looking for a whole bunch of them and, frankly, my head hurts already. I know there's no movement - it's a static JPEG - yet it keeps on moving. If I stare at a spot, it stops moving, but then others move. I can eventually stare wide enough to stop the whole thing, but I don't recommend that. I'm going to post this small one to break the ice. Have any you want to share? Just make sure they aren't animated gifs, as that's cheating.