Re: MythBusters and HTF...
Oh, at the start of the panel, they ran a video of "blooper footage" that ended up being stuff they can't air, but would be funny to show fans of the show in person at conventions. The first segment was testing for the presence of female flatuence, and, of course, Kari had to be mic'd up in her panties to capture fart sounds, and the whole process was pretty embarrassing for her, and some of the photos capture her reaction to the segment as she had to be mic'd up all day.
The other part of the video dealt with the lighting of flatuence, and Adam was game (as seen by the 3 photos I managed to snap of the screen). I've seen it done in person (silly college days), and the person doing the lighting produced blue flames, but Adam produced red flames when his flatuence was lit up (after a few false alarms in the segment).
The gang did warn that if the video ended up on Google Video or YouTube, or other video-sharing sites, their legal staff would get the footage removed from those sites, so if you do find it out there, watch it quickly because it may not be there later. There were quite a few people that did tape it for there own personal use (so many gadgets that record in movie mode these days, it's hard to keep control of such blooper footage).