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

The Guardian (2008)
Contemporary Theatre Review (subscription required) (2008)
The British Library (audio) (2008)
Time Out (2007)
Charlie Rose Show (video) (2007)
BBC Newsnight part onepart two and part three (video) (2006)
Latin America Conference (video) (2006)
Al-Jazeera (video) (2005)
BBC Hardtalk (video) (2004)
BBC (2003)
Books and Writing (2002)
The Guardian (2001)
The Guardian (2001)
Media Lens (2000)
The Paris Review (1966)