Having seen this meme via various people who have posted and who feed into Lib Dem Blogs (http://www.libdemblogs.co.uk/) I couldn't resist - You type in your birth date (but not year) and it then comes up with a whole host of events that happened on your birthday.
My list includes the following :
490 BC - Athens defeats Persia at the Battle of Marathon
1609 - Henry Hudson discovers the Hudson River.
1953 - Nikita Khrushchev is elected first secretary of the Communist Party of the Soviet Union
1953 - John F. Kennedy marries Jackie Bouvier.
1962 - President John F. Kennedy declares the USA will get a man on the moon, and bring him back, by the end of the decade.
1913 - Jesse Owens, American athlete (d. 1980)
1951 - Bertie Ahern, Irish politician
1977 - Steve Biko, South African anti-apartheid activist (b. 1946)