I was catching up on this show the other day and was surprised to hear Yamantaka's mantra used during a scene(Season 3 Episode 13 "Full Measure"). It's a violent scene where Mike(resident dirty work handyman) goes on a bit of a killing spree. Weird they'd choose the mantra for a sound bite, not sure if it has any significance other than sounding ominous to the untrained ear. The mantra can be heard at various points through the scene (at the start and then again around 3:10 in the clips linked below). Sounds like Gyuto monks. Couldn't find a code that would embed the video but here's some links to the scene.
http://www.amctv.com/breaking-bad/videos/breaking-bad-talked-about-scenes-mikes-killing-spree
http://www.mefeedia.com/movie/49857878

