Apologies in advance if this post makes you nauseous. Via Burak’s twitter feed, these wonderful old animated photos offer a real sense of three dimensionality simply by flipping between two close perspectives:
Makes me wonder what we could do with two cheap digital cameras mounted a few inches apart. Also, I dare someone to create a 3-D interface using this technique. See more on ffffound and cursivebuildings.
The Fine Folder 
i’ve also found that it’s really helpful to listen to music over headphones and stare at these. so far, i’ve tried that jajouka (see post), rock en inlges en español, as well as the most unwated song (see post).