Google’s creative doodles have been around for a very long time. The first one, I believe, introduced on Oct 31, 1999 was two jack-o’-lanterned pumpkins jammed into the logo, in an image format, which was usually the way how Google spreads the greetings in various occasions.
Lately, Google even made these doodles more attractive with more interactions with the users, thanks to the technology like HTML5. For example, the one shown up on Jun 9 this year was to remember the 95th birthday of the great Les Paul, a pioneer in the development of the solid-body electric guitar. What a great way of showing the appreciation?