AP Psych: Odds and Ends from Sensation & Perception

Beau Lotto's TED talk: http://www.ted.com/talks/beau_lotto_optical_illusions_show_how_we_see.html

"Castle" Optical illusion: http://izismile.com/img/img2/20090513/illusion_01.gif

Exploding head (or whatever else you look at afterwards): http://www.michaelbach.de/ot/mot_adaptSpiral/index.html

Dragon Illusion: http://www.grand-illusions.com/opticalillusions/dragon_illusion/ (Thanks to Charlie.)