Google’s homepage today (May 21, 2010) has a Pacman doodle – and the interesting thing is: its playable! And is Google’s first ever playable doodle!
Being a geek, I decided to have a look at the source code to find out how Google had done it.
[Update, 5/22/2010: for those looking for an offline, downloadable version of the Google Doodle, you can find it at http://github.com/macek/google_pacman . Thanks to “tom” for listing it in the comments below.]