This American Life (TAL) is a weekly hour-long radio program produced by Chicago Public Radio and hosted by Ira Glass. It is distributed by Public Radio International on PRI affiliate stations and is also available as a free weekly podcast. Primarily a journalistic non-fiction program, it has also featured essays, memoirs, field recordings, short fiction, and found footage. http://www.thisamericanlife.org/
Each week's show loosely centers on a particular theme. The theme of the show is explored in several "acts", usually two to five. On occasion, an entire program will consist of a single act. A notable exception was the show "20 Acts in 60 Minutes", which broke the normal convention by presenting twenty acts in one hour. Each act is produced using a combination of staff and freelance contributors.
Here is a sample from the archive. It is called “Family Legend.”