August Wilson: The Ground on Which I Stand (PBS documentary)
Unprecedented access to Wilson’s theatrical archives, rarely seen interviews and new dramatic readings bring to life his seminal 10-play cycle chronicling a century of African-American life. Wilson won two Pulitzer Prizes for Drama.
Available on DVD in the Main Library
Internet Archive
Free access to digital collections including music, video, web sites and millions of public-domain books.
YouTube
Lots of great material. Use it, but have a healthy skepticism about the origins and authenticity of videos!