Google is very innovative in making doodles and comes out with a doodle at every occasion and one such occasion is Independence day. This is an old doodle and this time in Year 2011 they depicted a doodle with Red fort in the background.
As you can see they are definitely innovative in approach and they take pain to celebrate each country festivals and occasions and these are available on country specific domains for the search. One really gets mesmerised seeing the doodles and a number of companies can learn the art of innovation from them as they are the best in the segment and its never late to learn as innovation is key to success.
Yahoo is equally innovative but is less proactive in creating the doodles unlike Google which comes out with doodle signifying every occasion.