Sounds Of Dissent: http://soundsofdissent.wordpress.com/
Show Archive: http://www.radio4all.net/index.php/series/Sounds+Of+Dissent
Schedule: Weekly but with gaps of months or years
Started: 1999, but programs archived since 2004-12-01
Interviews with a wide variety of interesting people - authors, academics, activists. The common thread being their commitment to challenging the commercially-controlled media's capitalist worldview.