看看大家有多少认同感，我只对 1， 4， 15，16，18 有 most powerful 的感觉。
9，11， 14， 17， 19 简直不值一提。
1. September 11th tragedy (2001)
2. Hurricane Katrina (2005)
3. O.J. Simpson verdict (1995)
4. The Challenger space shuttle disaster (1986)
5. Death of Osama bin Laden (2011)
6. O.J. Simpson white Bronco chase (1994)
7. Earthquake in Japan (2011)
8. Columbine High School shooting (1999)
9. BP oil spill (2010)
10. Princess Diana's funeral (1997)
11. Death of Whitney Houston (2012)
12. Capture and execution of Saddam Hussein (2006)
13. Barack Obama's acceptance speech (2008)
14. The Royal Wedding (2011)
15. Assassination of John F. Kennedy (1963)
16. Oklahoma City bombing (1995)
17. Bush/Gore election results (2000)
18. L.A. riots (1992)
19. Casey Anthony verdict (2011)
20. Funeral of John F. Kennedy (1963)
