PLAYING FOR CHANGE
I've been a fan of this foundation for a couple of years now.
I think they have a great mission: The Journey
Here you can watch an early project that helped propel them down their current path:
And here are a lot more videos if you like what you saw:
You can sort them using the tabs labeled "All Videos," "Featured Videos," and "Most Viewed Videos." I like #16 - The Playing For Change Foundation.
TED: IDEAS WORTH SPREADING
Loads of engaging & informative speakers on all kinds of subjects.
Here are three I like:
Hans Rosling, Insights on Poverty
Michael Pritchard's Water Filter
Here is TED's Homepage.
Jeff recommends the two following sites:
Stack Exchange and Future Timeline.
The first, Stack Exchange, is a user driven Q&A site.
The second, Future Timeline, is for anyone who acknowledges the genius of Moore's Law, or, would like to learn about the future if Moore's Law continues to be accurate, or, would simply like to know what Moore's Law is.
There are others, but I'll save those for another day.