Here are a collection of links to online interviews with Harold Pinter, ordered by date of interview, not publication (where that differs).

Harold Pinter and Melvyn BraggThe Guardian (2008)
Contemporary Theatre Review (subscription required) (2008)
The British Library (audio) (2008)
Time Out (2007)
Charlie Rose Show (video) (2007)
BBC Newsnight part one and part two (video) (2006)
Latin America Conference (video) (2006)
The Independent
Al-Jazeera (video) (2005)
BBC Hardtalk (video) (2004)
BBC (2003)
Books and Writing (2002)
The Progressive (2001)
The Guardian (2001)
The Guardian (2001)
Media Lens (2000)
The New Statesman (1999)
The Paris Review (1966)