Lally began his acting career with Taibhdhearc na Gaillimhe (Ireland's national Irish language theatre), and was a founding member of the Druid Theatre Company. Lally received an Irish Times/ESB Theatre Award Nomination for Best Actor for his role in Druid's production of The Dead School.
Lally started his acting career with Taibhdhearc na Gaillimhe, Ireland's national Irish language theatre, and was a pivotal figure in the founding of the Druid Theatre Company. Lally earned an Irish Times/ESB Theatre Award nomination for Best Actor for his performance in Druid's The Dead School.