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Osama bin Laden

In the first year of the century, Yahoo released the 20 most popular terms for the first time.

The Yahoo! Buzz Index Top 20 Leaders for 2001:
  1. PlayStation 2
  2. Britney Spears
  3. WWF
  4. Dragon Ball Z
  5. Napster
  6. World Trade Center
  7. Harry Potter and the Sorcerer's Stone
  8. Dale Earnhardt
  10. Internal Revenue Service
  11. Jennifer Lopez
  12. `NSYNC
  13. Las Vegas
  14. Eminem
  15. Osama Bin Laden
  16. Nostradamus
  17. Backstreet Boys
  18. Pamela Anderson
  19. Morpheus
  20. Pokemon
The number one slot belonged to PlayStation 2, which led to the optimistic prognostication "that gaming culture may be on the verge of eclipsing movies and television in the pop culture lexicon."

The terrorist attacks on Sept. 11, 2001, pushed the term "world trade center" into No. 6. The mastermind, Osama bin Laden, registered at No. 15, followed by Nostradamus, due to a hoax that the 16th-century so-called prophet predicted the events. Searches at the time also underwent an "upswing in patriotism. Searches on anthems, patriotic speeches and songs, and the American flag (26) soared as Americans looked for ways to express their support for their country."

Television's most powerful moments

According to a new study released by Nielsen, the Sept. 11 terrorist attacks, Hurricane Katrina and the O.J. Simpson verdict were among the most "impactful" moments in television history. Here are some of them.