Kind of off topic, but...
I just saw the infamous bachelor party episode on USA, and I was curious about the blue fire effect House started with the shot glasses. Is there a "name" for this trick? How is it done? I tried to do a google search, but I didn't find much.
I apologize for this being OT, but I appreciate any info Since it's not directly House related, I would be happy to delete the post after.
Thanks!