I have known Oliver Callan since we were both 18-year-old journalism students in DCU. He was from Monaghan and I was from Enniscorthy, and, as we both attempted to fit into Dublin life, we became friends. Twenty years later, we remain friends. I went down one road in journalism. He went a different path. But I have long felt that his satire derives from journalism; his relentless interest in the news and in current affairs allows him to shine a light on uncomfortable truths. And, couched in comedy, he can go further than many commentators. His weekly RTE radio show…