"In a world" -- our world -- movie trailers have undergone a massive evolution. The booming voice-of-God narration of the '80s and '90s has been silenced in favor of boojes and bwaas. In this episode of Twenty Thousand Hertz, host and sound design expert Dallas Taylor is joined by guests who share the history of trailers and a hilarious takedown of the sounds and dialogue that are common in the modern trailer style. You'll never be able to watch a blockbuster trailer the same way again. Twenty Thousand Hertz, a podcast revealing the stories behind the world's most recognizable and interesting sounds, is a new member of the TED family of podcasts. Listen or subscribe wherever you get your podcasts.