search the web for any song in the world

http://www.justhearit.com/

Bruce Bueno de Mesquita predicts Iran's future | Video on TED.com

http://www.ted.com/index.php/talks/bruce_bueno_de_mesquita_predicts_iran_s_future.html

Emily Levine's theory of everything | Video on TED.com

http://www.ted.com/talks/view/id/510

Hang this in your time machine

http://i.gizmodo.com/5207549/time-travel-cheat-sheet
Gizmodo - Time Travel Cheat Sheet - Time travel cheat sheet