Google's oodles of doodles

March 31, 2013: Cesar Chavez's 86th birthday

Dec. 21, 2012: End of Mayan calendar

April 20, 2010: Independence Day Israel 2010

Feb. 3, 2010: Norman Rockwell's 106th birthday

April 23, 2000: Happy Easter

Sept. 4, 2012: Al-Biruni's birthday

May 21, 2010: 30th anniversary of PAC-MAN

Feb. 14, 2011: Valentine's Day