from Wikipedia
Edit 7/12/06: Looks like much of this is an urban legend (quickly corrected on Wikipedia). Sigh.
Lincoln was the first President of the United States to be assassinated, Kennedy was the last [so far - did anyone see Death of a President?]. Lincoln was elected to Congress in 1846, Kennedy in 1946. Lincoln was elected President in 1860, Kennedy in 1960. Both of them were shot on a Friday, both men were shot in the head, and both of them were succeeded by men named Johnson. Lincoln's successor, Andrew Johnson was born in 1808, while Kennedy's successor, Lyndon B. Johnson was born in 1908. John Wilkes Booth, Lincoln's assassin, was born in 1839, while Kennedy's assassin, Lee Harvey Oswald, was born in 1939. Both assassins were themselves assassinated, before trial. Lincoln was shot in Ford's Theater, while Kennedy was shot in a Ford 'Lincoln' car.
Edit 7/12/06: Looks like much of this is an urban legend (quickly corrected on Wikipedia). Sigh.