TEDtalks:

2004:

Malcom Gladwell what every business can learn from spaghetti sauce 

ZeFrank imaginative online comedy

Jennifer Lin piano improv

Eve Ensler: Finding happiness in body and soul 

Stefan Sagmeister: Yes, design can make you happy 

Al Seckel: Your brain is badly wired — enjoy it!

Dan Gilbert: Why are we happy? Why aren't we happy? 

Amy Smith: Simple designs that could save millions of childrens' lives  

2005 

Steven Levitt: the Freakonomics of inner-city gangs

2006

2007  

Peter Donnelly: How juries are fooled by statistics

http://video.google.com/videoplay?docid=8676144440234129752

Wade Davis: Cultures at the far edge of the world

http://video.google.com/videoplay?docid=-3090105097538417312

Frans Lanting: A lyrical view of life on Earth

http://video.google.com/videoplay?docid=3838221386776907023

Saul Griffith: Hardware solutions to everyday problems

http://video.google.com/videoplay?docid=-1050160335660703463

Phil Borges: Documenting our endangered cultures

http://video.google.com/videoplay?docid=-2059981144925125187

Carl Honore: Slowing down in a world built for speed

http://video.google.com/videoplay?docid=-2059981144925125187

Robert Fischell: TED Prize wish: Finding new cures for migraine

http://video.google.com/videoplay?docid=-2751141706055149002

Thomas Barnett: The Pentagon's new map for war and peace

http://video.google.com/videoplay?docid=-2443934711053674980

Steven Johnson: A guided tour of the Ghost Map

http://video.google.com/videoplay?docid=-2443934711053674980

Robert Wright: How cooperation (eventually) trumps conflict

http://video.google.com/videoplay?docid=-7581385579778544715

Dan Dennett: A secular, scientific rebuttal to Pastor Rick Warren

http://video.google.com/videoplay?docid=-7746933613725264521

Kevin Kelly: How does technology evolve? Like we did

http://video.google.com/videoplay?docid=8406840539961089663

Golan Levin: The truly soft side of software

http://video.google.com/videoplay?docid=-8190862911514806546

Peter Gabriel: Fighting injustice with a videocamera

http://video.google.com/videoplay?docid=8592844573445762365

Dean Kamen: Rolling along, helping students and the third world

http://video.google.com/videoplay?docid=7099595518161735007

Robert Neuwirth: The "shadow cities" of the future

http://video.google.com/videoplay?docid=6972342669661544017

Tony Robbins: Why we do what we do

http://video.google.com/videoplay?docid=6972342669661544017

Stephen Lawler: Look! Up in the sky! It's Virtual Earth!

http://video.google.com/videoplay?docid=6972342669661544017

Stewart Brand: Why squatter cities are a good thing

http://video.google.com/videoplay?docid=6972342669661544017

Gregory Colbert: Gorgeous video from "Ashes & Snow"

http://video.google.com/videoplay?docid=6972342669661544017

Anna Deavere Smith: Four American characters

http://video.google.com/videoplay?docid=6972342669661544017

Robert Neuwirth: The "shadow cities" of the future

http://video.google.com/videoplay?docid=6972342669661544017

Ray Kurzweil: How technology's accelerating power will transform us

http://video.google.com/videoplay?docid=781070672390043414

Bob Thurman: Becoming Buddha -- on the Web

http://video.google.com/videoplay?docid=-204748663410736379

David Rockwell: Building the Ground Zero viewing platform

http://video.google.com/videoplay?docid=-547522455712296323

David Kelley: The future of design is human-centered

http://video.google.com/videoplay?docid=-742650042795438954

Tierney Thys: Swim with giant sunfish in the open ocean

http://video.google.com/videoplay?docid=8227024901753675205

Evelyn Glennie: How to listen to music with your whole body

http://video.google.com/videoplay?docid=6776196110217551972

Pilobolus: A performance merging dance and biology

http://video.google.com/videoplay?docid=3186902197125614526