[10] According to the Irish Museum of Modern Art, his work "encompasses installation, drawing, photography, video and audio media, and examines the influence of history on the individual and society.
[12] In 1984, The Washington Post said, "He is a performance sculptor, whose speciality is creating ground paintings and hanging shrouds out of natural materials, such as flour and soot, and rolling his naked body in them until he has erased his creation or transferred it to himself.
"[13] In 1990, his work "Hand On Face" was shown at Nelson Mandela: An International Tribute for a Free South Africa.
[16] In 1994, he worked with Moore, writing a song, "Tiles and Slabs," inspired by Brendan O'Donnell, a triple murderer from County Clare.
[5] As a performance artist, he cites Joseph Beuys, Pina Bausch and Marina Abramović as inspirations.