If you visited Google's website back in April 27, you may have noticed that Google's logo was like this.

Actually it's their rendering of the GOOGLE logo into Morse code.
The Morse code was named after Samuel Morse, the guy who invented it.
His birthday was back in April 27, 1791.

As you guys might have noticed, Google has this habit of changing logos that suit a particular event related to that date.

Good stuff!
*I wanna learn the Morse code. =)