If you didn't check out the Google doodle today, it's a sweet interactive animated doodle that when all the buttons have been depressed, plays a little light show accompanied by an instrumental 'jingle bells' ditty.
Click on the glowing button beneath the G and it becomes a snowflake:
Click on the glowing button beneath the first O and it becomes Santa:
Click on the glowing button beneath the second O and it becomes a bell:
Click on the glowing button beneath the second G and it becomes a snowman:
Click on the glowing button beneath the L and it becomes a candle:
Click on the glowing button beneath the E and it becomes a present:
According to Nathan Naze, Software Engineer at Google "Working with our doodlers, we had the bright idea to string lights along the Google homepage (and, because we can, added some interactive features). Of course, instead of using nails and hopelessly tangled strings of lights, we used JavaScript, Closure, and HTML5 or Flash to play the music (depending on the browser)."
Here it is in its animated entirety:
Happy Holidays back to you, Google!