Peace One Day is a 2004 documentary by Jeremy Gilley documenting his own efforts to establish an internationally sanctioned day for a global cease-fire. Gilley's journey begins in 1998 when he conceives of the idea for a cease-fire day at the WOMAD music festival. As he involves more and more people in his project, he realizes that the most effective way to achieve his goal is the declaration of a special day through a resolution by the United Nations General Assembly. The documentary features appearances by the various famous figures Gilley engages in discussion on his quest, including the Dalai Lama, Kofi Annan, Shimon Peres, Alan Rickman, Joan Plowright, Judi Dench, and Helen Mirren. Other sections of the film find Gilley traveling to multiple locations in Africa and Israel-Palestine, interviewing both victims and perpetrators of sectarian violence in order to initiate dialogue and to understand how such conflicts can be resolved peacefully.