The site is TED.com, and their mission is spreading ideas. This is what they say about themselves:
We believe passionately in the power of ideas to change attitudes, lives and ultimately, the world. So we're building here a clearinghouse that offers free knowledge and inspiration from the world's most inspired thinkers, and also a community of curious souls to engage with ideas and each other.
They provide 'talks', which may be truly talks, but also may be recitals (Jennifer Lin piano improv), demos (don't miss Photosynth by Blaise Aguera y Arcas), eat to starve cancer, school lunches--around 700 presentations, so far!
Nothing on television? Got a few minutes in the grocery line? Visit my new buddy, TED! (NOT while driving, folks! I saw a 3-car wreck just this morning on the way to work.)