Are you interested in Ball Lightening?

Check out these four sites!!

http://www.aps.org/apsnews/0500/050011.html

http://www.eskimo.com/~billb/tesla/ballgtn.html

http://web.ukonline.co.uk/Members/ad.johnson/text/bl.htm

http://www-bprc.mps.ohio-state.edu/~bdaye/balligh.html#A1.2