TED (Technology, Entertainment and Design) is
a global set of conferences curated by the American private non-profit Sapling Foundation, formed to disseminate "ideas worth spreading." (Wikipedia).
So actually TED are presentations in every field imaginable and most of them are really good. And some of them are inspiring. I use Miro player to download them and watch them when I have some free time.
Highly recommended.
Personal favourites:
- http://www.ted.com/talks/cameron_herold_let_s_raise_kids_to_be_entrepreneurs.html
- http://www.ted.com/talks/david_brooks_the_social_animal.html
- http://www.ted.com/talks/salman_khan_let_s_use_video_to_reinvent_education.html
- http://www.ted.com/talks/christopher_mcdougall_are_we_born_to_run.html
- http://www.ted.com/talks/rory_stewart_time_to_end_the_war_in_afghanistan.html