Sound of electricity

Hi,

I'd like to make a patch which makes the sound of electricity (as in the movies). Does any of you know a good starting point. My guess is:

[drunk]
           |
[noise]->[bpf]->[dac]

(drunk above bpf (band pass filter))

But maybe I need to look at a different direction
Inspiration: http://www.youtube.com/watch?v=vCpH19TkMqo

Thanks for thinking along!