Happy sweet 16, Google Doodle!

The quirky art featured on the search giant's homepage celebrated its 16th birthday on Saturday with, appropriately, an animated Google Doodle. In it, the G in Google's logo measures the growth of the O and L.

















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Google's unique art has celebrated a variety of people, events and causes over the years. Its topics have ranged from sci-fi show Doctor Who to iconic actress Audrey Hepburn, as well as social causes including International Women's Day, the Sochi Winter Olympics gay-rights controversy and the 50th anniversary of Martin Luther King Jr.'s "I Have a Dream" speech.

Over the years, Google has become more technically ambitious with its Doodles, including an audio partnership with NPR radio program This American Life for Valentine's Day, a playable guitar in honor of Les Paul and a working Rubix cube. Also, let's not forget the Pac-Man Google Doodle that distracted us all from work in 2010.

So happy birthday, Google Doodle. Please keep delighting us for another 16 years and more.