How do you theoretically take a sphere and turn it inside out without breaking it apart or creasing it? this video explains how.
Outside In (http://video.google.ca/videoplay?docid=-6626464599825291409&q=turning+a+sphere+inside+out&total=8&start=0&num=10&so=0&type=search&plindex=1)
It's sort of middle school educational film quality (from the early 90s) but interesting nonetheless.
21 minutes long, but absolutely enthralling! At least, for me...
I know eh!
Yeah, I thought it was interesting :) Not tomething I'm going to watch again though (much like the math shows on ACCESS that are waaaay above my level).