Natural Constructivism: sense perception in the human Umwelt – Beau Lotto: Optical illusions show how we see
http://www.ted.com/talks/beau_lotto_optical_illusions_show_how_we_see.html
BBC Horizon ‘Is Seeing Believing?’
http://www.bbc.co.uk/iplayer/episode/b00vhw1d/hd/Horizon_20102011_Is_Seeing_Believing/
Plant Intelligence
http://www.ted.com/talks/stefano_mancuso_the_roots_of_plant_intelligence.html
Enjoy!