Max Pearson presents a collection of the week's Witness History interviews from the BBC World Service. Our guest is film critic and journalist Helen O'Hara who dissects what makes a cult film classic, after we hear about the making of the 1989 American film Heathers.

We also learn about the French philosopher behind the theory of deconstruction and how the world first became aware of coral bleaching in the 1980s.

As the climax of the American Football season approaches we look back at one of the most memorable moments from Super Bowl history.

Contributors:

Helen O'Hara - film critic and journalist.

Helene Cixous - lifetime friend of French philosopher Jacques Derrida.

Agathe Hébras - granddaughter of Robert Hébras, survivor of the Oradour Massacre.

Clive Wilkinson - the former co-ordinator for the Global Coral Reef Monitoring Network.

Osi Umenyiora - two-time Super Bowl winner with the New York Giants.

(Photo: Winona Ryder, Kim Walker, Lisanne Falk, and Shannen Doherty on the set of Heathers 1988, New World Pictures/Getty Images)