Johnny Cash visits his childhood home, talks about his family history and recalls listening to the radio as a child in this clip from "Johnny Cash: The Man, His World, His Music."

Robert Elfstrom discusses some of the key choices that went into making Johnny Cash: The Man, His World, and His Music. He also talks about Johnny Cash's impact on American culture.

First-time filmmaker Katrina Browne makes a troubling discovery — her New England ancestors were the largest slave-trading family in U.S. history.

First-time filmmaker Katrina Browne talks about the "unfinished business" of slavery in the United States and what she hopes viewers will take away from her film.

Tony Kushner works on finishing his production of "Caroline, or Change" and begins previews of the musical.

Tony Kushner goes back to Lake Charles, Louisiana and remembers his childhood with his brother.

Film critic Roger Ebert and '49 Up' filmmaker Michael Apted discuss the "Up" series. They talk about Apted's habit of asking tough questions and the legacy of the series. Ebert observes that the personalities of some of the adults were evident from the very beginning, as seen in "7 Up"

In an interview with film critic Roger Ebert, Filmmaker Michael Apted praises his participants in '49 Up' for the dignity with which they have conducted themselves over the past 42 years and talks about how he thinks one big achievement of the "Up" series is that the participants elevated ordinary life to real drama in a dignified way.

Film critic Roger Ebert talks to filmmaker Michael Apted about some of the tougher questions posed to the subjects in '49 Up' over the years. Apted feels that the hard questions are a key to what the series is really about - his relationship with the participants.

Roger Ebert and filmmaker Michael Apted reflect on the important cultural shift that occurred in the early 1960s in the United Kingdom, particularly in 1963, with the arrival of the Beatles, Mary Quant and British theater's angry young men.

Roger Ebert calls the "Up" series "the most noble use of film" that he's witnessed as a filmgoer. '49 Up' filmmaker Michael Apted says that the crew, the participants and he are a family of sorts and that their mutual affection is a necessary ingredient in the series' success.

Arlyck talks about the similarities and differences between himself and his subject Sean and, ultimately, between the Baby Boomer generation and Generation X.

Filmmaker Laura Poitras talks about why she was fortunate to find her subject, Dr. Riyadh, the contradictions of invading a country to establish democracy and the making of her Academy Award-nominated film, My Country, My Country.

Ewing and Grady talk about how their film became a mission when the alternative school they were profiling closed its doors.

Filmmaker Roger Weisberg talks about making WAGING A LIVING (POV 2006), a documentary about America's working poor. Weisberg talks about how he has found the unique characters he champions in his work. (This is a rough cut from the POV archives.)

In Japan, baseball is not a pastime it's a national obsession. Following two teams and their dedicated coaches, Kokoyakyu: High School Baseball take viewers inside a world where baseball becomes a proving ground for life's challenges.

The third clip associated with the "In the Realms of the Unreal": The Artist and Society lesson plan sees Henry Darger's story grew increasingly complex as he improved his art technique. Students should discuss how did Darger use popular (borrowed) images in his work. They can also create collages that re-tell Darger's narrative (or students' own story), in the visual language of urban New York.

In the second clip associated with the "In the Realms of the Unreal": The Artist and Society lesson plan, Henry Darger's neighbors and acquaintances talk about his collection of newspapers and ephemera that he used in his artwork. Students should consider the fact that the use of images from the advertising media of his time gives Darger's work a "look" that ties it to a time period.

Henry Darger had a difficult childhood that influenced his views on good and evil. The second clip associated with the "In the Realms of the Unreal": Good and Evil lesson plan demonstrate Darger's faith in Christianity and in the bravery of little girls. These are Darger's forces of "good" who do battle against the forces of "evil."

Henry Darger had a difficult childhood that influenced his views on good and evil. The third clip associated with the "In the Realms of the Unreal": Good and Evil lesson plan shows the beauty of the Vivian girls and the innocence of the other children juxtaposed with the violence and pain inflicted on them by the Glandelinian soldiers.