ted.com

a very nice web site with a lot of 10 minutes videos on very different subjects:

www.ted.com

my favorites here, but there are many more:

Theo jensen: The art of creating creatures:
http://www.ted.com/index.php/talks/theo_jansen_creates_new_creatures.html

Sculpture that's truly moving ( Arthur Ganson )
http://www.ted.com/index.php/talks/arthur_ganson_makes_moving_sculpture.html

Underwater astonishments ( David Gallo )
http://www.ted.com/index.php/talks/david_gallo_shows_underwater_astonishments.html

Using biology to make better animation ( Torsten Reil )
http://www.ted.com/index.php/talks/torsten_reil_studies_biology_to_make_animation.html

Brain magic ( Keith Barry )
http://www.ted.com/index.php/talks/keith_barry_does_brain_magic.html

Why design? ( Philippe Starck )
http://www.ted.com/index.php/talks/philippe_starck_thinks_deep_on_design.html

Theremin, the untouchable music ( Pamelia Kurstin )
http://www.ted.com/index.php/talks/pamelia_kurstin_plays_the_theremin.html

Are children's carseats necessary? ( Steven Levitt )
http://www.ted.com/index.php/talks/steven_levitt_on_child_carseats.html