Stephen Hawking gave A Public Lecture on black holes at Oxford University

World-renowned theoretical physicist Stephen Hawking exhilarated everyone who attended the Inaugural Roger Penrose Lecture - Steven Hawking with his talk on black holes at the University of Oxford.
Inaugural Roger Penrose Lecture is a series of annual Public Lectures in honour of Roger Penrose for the recognition of a lifetime's contribution across the mathematical sciences

Stephen Hawking is the former Lucasian Professor of Mathematics at the University of Cambridge and now the Dennis Stanton Avery and Sally Tsui Wong-Avery Director of Research at the Department of Applied Mathematics and Theoretical Physics

This public lecture was also streamed live around the world via the university's Facebook page. (Had trouble embedding it here, but we found a video on youtube below)