Today on the Google home page is a special Google logo (aka Doodle) for Niels Bohr 127th birthday.
He was born today in 1885 Copenhagen, Denmark. He is known for his contributions to the understanding atomic structure and quantum mechanics. In fact, he received the Nobel Prize in Physics in 1922 for those contributions. One of his sons, Aage Bohr, also received the Nobel Prize.
He was one of the most influential Physics of the 20th century, known for Copenhagen interpretation, Complementarity, Bohr model, Sommerfeld–Bohr theory, BKS theory, Bohr-Einstein debates and Bohr magneton.
You can learn more about his life at Wikipedia.
As you can see, the Google Doodle today is pretty science looking.
Forum discussion at Google Web Search Help.