I’m a huge fan of TED talks. If you read New Scientist or Scientific American and you’ve never seen a TED talk you may be missing out as the topics covered are generally very similar. And if you don’t, you’re still missing out! You may have seen the now famous multi-touch display, first demo’d (I do believe) at TED.
TED talks are on a variety of topics ranging from “Is there a God?” and “What makes us happy?”, and their new website reflects on these themes with a nice new Flash theme-based visualisation of the (now over) 100 talks, along with some other great new features.