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.

Why is it that karaoke machines only have songs on them? If what they do is take a version of a public performance and allow the rest of us to give our own interpretations of the material, why aren't there other options, like the "you talkin to me?" scene from Taxi Driver, or Martin Luther King, Jr.'s "I Have a Dream" speech. Jonathan Goldstein and producer Starlee Kine find out why when they go to a karaoke club that has, along with all the songs, comedy routines for people to perform.

If you're going to do a show about people who are lost, you pretty much have to include a story about adolescents. Jonathan Goldstein tells a story from his teenage years.

David Sedaris tells a story about how, as a teenager, he was scared of certain people...until he made them scared of him, one fateful night. Sedaris is the author of Me Talk Pretty One Day and other books.

Sarah Vowell tells the lost story behind a patriotic song, "The Battle Hymn of the Republic." An early version of the song celebrated an American terrorist. She's accompanied by Jon Langford and the band.

The story of one girl's mission to bring people together everywhere by eliminating small talk forever. This American Life producer Starlee Kine has been going around lecturing audiences on the subject. She encourages them to switch to a new system she's invented, called The Rundown.