Oooh, a double-take. I hadn't thought of that. Cool! I think it makes sense that the sliding thing is a 2D phenomenon, with 3D I think there are more visual cues for the brain to interpret. Speaking of visual cues, I'm starting to get amazed at how much expression and character one can get from really small animation effort. Just a few keyframes, and your dude is already registering surprise and suspicion (or that's how it strikes me). Whee! This animation stuff is pretty fun.