Documentaries

Diggnation (MP3)

Typeradio Podcast

Science Weekly

Media Talk

small WORLD podcast

Film Junk Podcast

The Guardian Culture Podcast

The Underground Railroad

Johnnie Moore's Weblog Podcasts

crayonCast & 93 Colors

Be A Design Group: Podcast

AudioSurgeon

The Paranormalists

PingMag - The Tokyo-based magazine about "Design and Making Things"