Calvary is a 2014 Irish drama film written and directed by John Michael McDonagh, it stars which Irish actor, best known for comedic roles such as Roy Trenneman in the Channel 4 comedy "The IT Crowd"?
Calvary (film):  It stars Brendan Gleeson, Chris O'Dowd, Kelly Reilly, Aidan Gillen, Dylan Moran and Isaach de Bankolé. Chris O'Dowd: Christopher O'Dowd (born 9 October 1979) is an Irish actor, best known for comedic roles such as Roy Trenneman in the Channel 4 comedy "The IT Crowd".
Christopher O'Dowd