Maratus voltans, spider supreme!
I've been showing this video all week to everybody in range of my computer. It's simply the most awesomest salticid display, EVAR. And if you know your jumping spiders, you can bet that it's no mean feat. Watch the entire video, or just scoot to 3:01. it's absolutely insane. oh unk. thanks to bug girl, i see Mr. Otto has an entire flickr site of the fella