Take a look at today’s custom Google logo which I believe is the first ever to incorporate motion (feel free to correct me in the comments if I’m wrong). Just move the browser window around or swing your cursor over the logo to make the balls move around.
There was one a couple of days ago with a buckminster fullerene that you could spin around with your cursor.
Hmm, I don’t see this… (On Mac, Chrome from Aus at http://www.google.com)
also this http://searchengineland.com/googles-issac-newton-apple-tree-logo-32768
There was also the Pacman game
there was actually another motion incorporated logo a couple days ago with a ball type thing as the second O and when you would mouse over it the ball would spin
Also on google, if you type in google gravity and then hit “i’m feeling lucky” something cool will happen. Give it a try if you haven’t yet.