Possibly the most interesting Theridiidae

[buthus]

I wish I could get a hold of some of these...
http://www.cyberoz.net/city/sekine/zukax104.htm

Decent video...
http://zoo2.zool.kyoto-u.ac.jp/ethol/showdetail-e.php?movieid=momo050707ac01b

 

[CopperInMyVeins]

Wow, now there's something I've never seen before, I love how it goes from looking like a hanging pine needle to springing into action with legs extended.

 

[Gwegowee]

oh thats crazy... looks more like an insect but acts, and actually is a true spider.