there's a big list at wikipedia but most of the ones i know have already died:
1724 - Immanuel Kant, German philosopher (d. 1804)
1870 - Vladimir Lenin, Russian revolutionary (d. 1924)
1884 - Otto Rank, Austrian psychologist (d. 1939)
1899 - Vladimir Nabokov, Russian writer (d. 1977)
1904 - Robert Oppenheimer, American physicist (d. 1967)
1922 - Charles Mingus, American musician (d. 1979)
1923 - Bettie Page, American model
1927 - Laurel Aitken, Jamaican singer (d. 2005)
1937 - Jack Nicholson, American actor
1944 - Steve Fossett, American adventurer (d. 2007)
1950 - Peter Frampton, English musician
1977 - Mark van Bommel, Dutch footballer
1982 - Kaká, Brazilian footballer
1982 - Tim Hamilton, Slovak adult movie actor
I don't know that last one, but I'm listing him anyway because I have a feeling it might be some pseudonym of _slavo_
I would've listed some chick from the Sugababes as well, if it wasn't that she's not an original member.
These folks died on my birthday:
1994 - Richard Nixon, President of the United States (b. 1913)
2002 - Linda Lovelace, American adult actress (b. 1949)
All I know is they both had something to do with
Deep Throat, although I've been told they were different ones.