Have you ever wondered what Tracy and Holly smell like? They’ll tell you! They’re also eager to talk about how people use and perceive perfume, and why cottage-industry perfumeries attract such devoted followings.

Both Tracy and Holly love new games, but they also fondly recall the early days of the video game industry. Take a trip down memory lane as talk turns to arcades, “Wreck-it Ralph” and why gamers get so attached to the titles.

The entertainment market is saturated with supernatural creatures, but vampires and zombies seem to be the most popular, with werewolves coming in a close third. What will we be seeing the most of once the various iterations of the undead are played out?

PopStuff is addicted to coffee. This stimulant seems to have a stranglehold on humanity, and an entire culture has sprung up around it. Where does coffee actually come from, and why is our love affair with it so solid?

From Rosie to Bender and far beyond, robots have been a part of the media we consume for decades. Tracy and Holly talk about R2D2, Wall-E, Terminators and a host of other mechanical pals, trying to figure out why we love them so.

" Marketers often depend on hype to foster interest in a product, but sometimes, the hype machine backfires. Tracy and Holly talk about the hype cycle and hash out how it applies to tech, movies, music and other consumables."

Have you ever had a song stuck in your head? That’s an earworm, and it’s an extremely common phenomenon. Holly and Tracy wonder why our brains latch onto small pieces of information, how you get rid of them, and why it’s important to study this field.

Hipster. The very word makes people sneer. Why are hipsters viewed with such disdain? And what makes a person a hipster, anyway? Tracy and Holly examine the history of the word “hipster,” as well as the various definitions of what a hipster is.

Bon appétit! There are more cooking shows on television than ever before, but it seems fewer and fewer people are actually prepping their own food. Has cooking become a spectator sport? Listen in to learn more.

We all know the Internet is awash with garbage, but there are also some hilarious and creative gems floating around the ether. When Tracy and Holly separate the wheat from the chaff, what Web memes and other delights do they fall in love with?