US President Barack Obama received a vaccine jab against the swine flu.
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The Zodiac Killer claimed two more victims.
The Christmas classic directed by Frank Capra, 'It's a Wonderful Life,' premiered in New York.
Pope John Paul II established World Youth Day, an event for young Christians around the world.
Gangs of New York, starring Leonardo DiCaprio, Daniel Day-Lewis, and Cameron Diaz, was released.
The first spacewalk was made by the Soviet cosmonaut Georgy Grechko during Salyut 6 EO-1 mission.
