I use Google almost exclusively as my search engine of choice. I'm always impressed with the way they change their logos to reflect current themes whether holidays or other current affairs. After spending the day at a celebration of Rev. Dr. Martin Luther King's life and legacy and in fellowship with Fraternity Brothers who love and honor Brother King as one of our own, I logged onto my computer and saw this image on Google's homepage.
Outstanding. If you want to see more of their logos throughout the years, both official and unofficial, check this link.