Preview: Viewing highlights of the week

Ireland has lost over 80 peacekeepers on United Nations duty, but only one remains officially classed as missing in action. Leargas: The Peacekeeper Who Never Came Home, Monday, 7.30pm, RTE 1:

Private Caomhan Seoige from Co Galway was just 20 when he vanished from his observation post in south Lebanon in 1981. His disappearance has never been explained.

Des Bishop presents this new series in which Irish actors, comedians and musicians, such as ...