7/9 developer desktops here in the office are FC4 or FC5, and our entire $100k server cluster is running a customized FC5
Back on the subject at hand: Mr. Stormie Man could have just shot his commander instead of going up against a Jedi. Would have been much better all the way around.
The whole "lightning is bad!" thing has always bugged me to some extent, since pretty much it only got that way because the Emperor used it and so it's bad by association. There are some powers that are obviously too destructive and/or nasty to be lightside, but lightning really isn't one of them.
Besides, even if it is an inherently darkside power, I beat Jedi Knight and KotOR with Lightning in my reptoire of basic Force stuff, and I did both light side.
Besides, those Dark Jedi are never trustworthy. They'll take a run at anybody if they think they can win.