Go visit TED to review some ideas worth spreading. 20-minute inspired video talks by some of the world's greatest thinkers.

Here are some of my own favorites:

Genomics pioneer Craig Venter talks about the millions of genes his team has discovered in their quest to map the ocean's hidden biodiversity. He has a vision for engineered species that can replace the petrochemical industry by creating clean energy.

Craig Venter: A voyage of DNA, genes and the sea:

http://www.ted.com/index.php/talks/view/id/6

Hod Lipson demonstrates a few of his cool little robots which have the ability to learn, "understand" themselves and self-replicate.

An inquiry into the nature of how humans and living beings learn and evolve, and the very nature of consciousness. 

Hod Lipson: Robots that are "self-aware":

http://www.ted.com/talks/view/id/165

Richard Branson talks about the ups and the downs of his career, from his multibillionaire success to his near-death experiences. 

Richard Branson: Life at 30,000 feet:

http://www.ted.com/index.php/talks/view/id/181

Stephen Petranek lays out the challenges that face us in the drive to preserve the human race forever. Will we be wiped out by an asteroid? Eco-collapse? Pandemic disease?

Stephen Petranek: 10 Ways the World Could End:

http://www.ted.com/talks/view/id/167

TED Prize Winners:

http://www.ted.com/themes/view/id/12