Tent caterpillars, via jwz via rosefox. Creepy creepy augh, but completely fascinating.
Class in the U.S., by the very clever wynddom.
Music for one apartment and six drummers, via shadowsong on Making Light. (I don't know this person, but noticing that the e-mail address on the Making Light comment was from LJ I went to look, and based on the interests list I find it strange and unlikely that we have no LJ-friends in common. Perhaps this will change now!)