Everything from Dilbert to Pac-Man has shown up in Google's legendary doodles. Here are a few of the most notable throughout the years.
Earth Day - April 22, 2006
Google released this solar-panel doodle on Earth Day in 2006. Solar power is so hot these days (haha).
Valentine's Day - February 14, 2007
When Google released this decadent doodle on Valentine's Day in 2007, some people were confused. "When you look at the logo, you may worry that we forgot our name overnight, skipped a letter, or have decided that 'Googe' has a better ring to it," Google doodler Dennis Hwang said on the official Google blog, "None of the above. I just know that those with true romance and poetry in their soul will see the subtlety immediately. And if you're feeling grouchy today, may I suggest eating a strawberry."
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