History.com: After 9/11: 5 Cultural Moments That Helped Americans Move Forward

From David Letterman's emotional monologue to George W. Bush's World Series first pitch, these collective experiences helped the nation process its shock and grief.While the United States was still reeling after the September 11 terrorist attacks, it was the country's comedians, musicians and screen stars, along with a symbolic sports moment, that played a prominent initial role in helping America collectively process its shock and grief.