Over the years Google has created many Google logos for varying occasions. So without further ado, I present to you my 15 of the best Google Logo's!

1. Earth day 22nd April 2008

2. Edvard Munch's Birthday, December 12th 2006

3. Vincent van Gogh's Birthday, March 30th 2005.

4. Invention of the First Laser, May 16th 2008

5. Leonardo da Vinci's Birthday, April 15th 2005

6. Large Hadron Collider, September 10th 2008

7. Einstein's birthday, March 14th 2003

8. Louis Braille's Birthday, January 4th 2006

9. Happy Birthday to Michelangelo, March 6th 2003

10. Earth Day, April 22nd 2007

11. St. Patricks Day, March 17th 2006

12. Happy Halloween, October 31st 2006

13. Independence Day, July 4th 2005

14. Frank Lloyd Wright's Birthday, June 8th 2005

15. 100th Anniversary of Flight, December 17th 2003

I do feel that one of Googles most amusing tricks was not the logos above but the April Fools day pranks that they do. The MentalPlex technology that they released for April Fool's day 2000 has got to be one of the best, here is a link to the page.

Google has turned to cartoonist Scott Adams from Dilbert before for the logo, below is Mondays but check out the rest of the week here