Lady Gaga signed a Las Vegas residency deal for $75 million at MGM Park Theatre.
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The Zodiac Killer claimed two more victims.
US President Barack Obama received a vaccine jab against the swine flu.
Cardiff was proclaimed the capital of Wales by the UK's Minister for Welsh Affairs.
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.
