Media playback is unsupported on your device

Hollywood star Bradley Cooper explains his film

21 March 2011 Last updated at 16:21 GMT

Hollywood actor Bradley Cooper explains the plot of his latest film Limitless in under 2 minutes. Cooper is the star of the film which tells the story of a man who takes a pill that gives him access to his entire brain and memory.

The film which also stars Robert De Niro is due to be released in cinemas on 23 March.