Outside of his career in stand-up and presenting, McGahern is known for his acting work.
Chris Tordoff, creator of
Hardy Bucks, spotted McGahern during a stand-up performance one night in Dublin and offered him a cameo on his new show. McGahern's character, 'Sim Card', quickly became a regular cast member. In 2014, McGahern wrote and directed ''The Devil's Ceili'' with Philip Doherty, which went on to win two awards including best play at the
All-Ireland Drama Festival. The play presents the psychedelic experiences of three social climbers in a small Cavan town who are slipped
LSD by the devil. McGahern has also had TV acting roles in Irish comedy series, including
Bridget & Eamon, The Doireann Project, Nowhere Fast and
Finding Joy. Between 2021 and 2022, McGahern had a recurring role as 'Michael Foley' in the
RTÉ drama series,
Smother. In 2021, McGahern had a two-episode guest role on the
CBBC musical science-fiction series,
Nova Jones. ==Activism==