If you visit Google.com today, you will see a Google Doodle (logo) of an Apple tree. If you wait a couple seconds, you will notice that one of the apple's falls off the tree. Yes, it is Issac Newton's birthday, 367 years ago today, and it is also the first ever (I believe) animated Google Doodle (logo) in history.
Here is a picture of the logo:
Want to see how it was/is animated? Here is a short video:
Everyone, I think, knows the story behind Issac Newton's theory of gravitation. So hence the apple falling off the apple tree. It is great to see Google have a Doodle for Issac Newton. But you got to believe there will be two points of controversy with this Doodle.
(1) Like always, there are plenty of other important events that occurred on January 4th
(2) Google has never really animated their logo in the past. Why now? They did recently have a neat I'm Feeling Lucky easter egg. Too see that click here.
Forum discussion at Google Web Search Help, DigitalPoint Forums and Google Webmaster Help.