I agree with David. He uses liquid smoke since it is all done inside. I've seen the episode and found it entertaining, but those of us with a WSM...
On a similar note, he has an episode on homebrewing which features a risky procedure. He recommends using commercial ice to pour the wort over to help bring down the temps in preparation for the yeast. Sanitation is critical in brewing and introducing commerical ice is risky. OK, I'm off my soap box.