Suspicious Observers, Youtubers who analyze space weather and other interesting phenomena, captured electricity in an experiment they conducted. The Youtube clip can be seen here:
http://www.youtube.com/watch?v=vRy6DPx-5Fc&feature=c4-overview&list=UUTiL1q9YbrVam5nP2xzFTWQ
I was struck by the resemblance to the 'spiderweb' phenomena seen on the TEPCO cam: