Celebrity deaths in 2011

56 of 84: In this 2007 publicity image released by Outpost Films, directors Sebastian Junger, left, and Tim Hetherington are shown at the Restrepo outpost in the Korengal Valley, Afghanistan, during the filming of their documentary 'Restrepo.'

Hetherington was killed by an explosion on Wednesday, April 20, 2011 while covering battles between rebels and Libyan government forces. He was 40 years old. (AP Photo / Outpost Films, Tim Hetherington)