An inventor designs a robotic device that creates a dilemma for the administrators and judges of a major electronics trade show.

LaDonna sets out to understand how this place is run.

Dr. Cady Coleman is a NASA astronaut who has spent more than 4300 hours in space.

Aviva DeKornfeld has the story of Leisha Hailey, who was certain she had the next million-dollar idea. (11 minutes)

Reporter Jack Hitt explains the alarming difference between theory and practice when it comes to computerized voting machines—specifically, those made by a company called Diebold.

Host Ira Glass tells the story of Chris Sewell, who was living on the street and yet somehow managed to find $610,940 of lost money that belonged to the city of New York, hidden away on the Internet.

Another story of someone using the word love as they try to make sense of things. Russell Banks reads an edited version of his short story "Sarah Cole: A Type of Love Story," which appears in its full version in his collection The Angel on the Roof.

We set up a special 800-number for listeners to call with their true-life scary stories. More than 500 people called.

David Sedaris reads a new story that explores the age-old question: Can a parrot and a pot-bellied pig find happiness in a world that only wants to pigeon-hole them? David's most recent book is Dress Your Family in Corduroy and Denim.

What happens to you if you stay in sales all your life? 76-year-old salesman "Diamond" Jimmy Roy has sold everything from used cars to antiques to jewelery. Independent producer Dan Collison shadowed Jimmy Roy in his native Braddock, Pennsylvania, to talk to him about the philosophy that's kept him going as a salesman for over fifty years.

This American Life producer Alex Blumberg talks with Ed Ugel, who had a very unusual dream job: He bought jackpots from lottery winners. When you win the lottery, your prize is often paid out in yearly installments.

What do you do when you think your apartment is being bugged? You call the apartment de-buggers. It's a weird job; still, someone's got to do it. This American Life producer Jane Feltes goes on a counterespionage mission.

Even when an animal is not a pest, not chewing up homes or spreading disease or biting average citizens, even when it is universally loved, it can still wreak havoc when it arrives in our world. James Spring has this example from a community of harbor seals in La Jolla, California, near San Diego.

Adam Davidson and Chana Joffe-Walt from Planet Money head to the Hunts Point Market in the Bronx, a bustling area of vegetable and fruit commerce that only comes alive at night. Planet Money is a co-production of NPR News and This American Life.

This American Life receives an emergency transmission from a rooftop somewhere in New York City, where John Hodgman reports on the true-life origins of Christmas traditions. John Hodgman is the author of More Information Than You Require.