Results come from Exumo's own index. Data from YouTube; Exumo is not affiliated with YouTube.

1. 10:13

   Questioning the universe | Stephen Hawking

   TED · Apr 4, 2008 · 7M views

2. 17:51

   The call to learn | Clifford Stoll

   TED · Mar 27, 2008 · 1.3M views

3. 7:22

   Roy Gould: WorldWide Telescope

   TED · Feb 29, 2008 · 91.9K views

4. 6:54

   Joseph Lekuton: A parable for Kenya

   TED · Feb 29, 2008 · 23.9K views

5. 17:01

   Raspyni Brothers: Welcome to Vaudeville 2.0

   TED · Feb 29, 2008 · 26.8K views

6. 6:21

   Jill Sobule & Julia Sweeney: The Jill & Julia Show

   TED · Feb 29, 2008 · 30K views

7. 17:43

   Moshe Safdie: What makes a building unique?

   TED · Feb 19, 2008 · 51.3K views

8. 8:33

   George Dyson: Let's take a nuclear-powered rocket to Saturn

   TED · Feb 19, 2008 · 85.1K views

9. 19:31

   Howard Rheingold: Way-new collaboration

   TED · Feb 12, 2008 · 55.4K views

10. 17:33

    Michael Pollan: A plant's-eye view

    TED · Feb 7, 2008 · 218.1K views

11. 15:43

    Jaime Lerner: Sing a song of sustainable cities

    TED · Feb 7, 2008 · 64.1K views

12. 13:40

    Robin Chase: Getting cars off the road and data into the skies

    TED · Feb 1, 2008 · 19.1K views

13. 12:50

    Chris Anderson (TED): A vision for TED

    TED · Feb 1, 2008 · 38.7K views

14. 17:37

    Alison Jackson: A surprising look at celebrity

    TED · Feb 1, 2008 · 48.2K views

15. 19:09

    Ben Dunlap: The life-long learner

    TED · Jan 23, 2008 · 89.1K views

16. 10:40

    Raul Midon: "All the Answers" and "Tembererana"

    TED · Jan 23, 2008 · 45.6K views

17. 18:12

    Paola Antonelli: Treating design as art

    TED · Jan 22, 2008 · 41.6K views

18. 18:03

    The mystery box | JJ Abrams

    TED · Jan 14, 2008 · 963.8K views

19. 6:01

    Underwater astonishments | David Gallo

    TED · Jan 14, 2008 · 2M views

20. 6:16

    Yossi Vardi: Help fight local warming

    TED · Jan 9, 2008 · 29.4K views