Dara Ó Briain
Dara Ó Briain is an Irish comedian, atheist, and skeptic. He studied mathematics and theoretical physics at University College in Dublin. He is most notable for presenting on the BBC's Mock the Week and a similar news-based show in Ireland, The Panel. Along with Brian Cox, he presented the BBC Stargazing series. Religion and various types of woo are often the target of his snark in his stand-up routine. He often dumps on homeopathy and other forms of alternative medicine.
In a case of Protestant vs. Catholic atheism, Ó Briain says, "I’m staunchly atheist, I simply don’t believe in God. But I’m still Catholic, of course." He's quipped on this several times. On one episode of Mock the Week he said "I'm an atheist... well, a Catholic atheist. You can stop believing in God, but you don't stop being Catholic". More recently, he stopped including religion in his stand up on account of it getting old and the fact that Protestants and Catholics alike would almost constantly complain that he didn't do jokes about Muslims. Dara's response to this was to say that a) he knew nothing about Muslims to make a joke about and b) neither did they.
He's been doing more geeky television of late, including a mathematics panel game called School of Hard Sums on Dave (yes, the UK really does have a TV station called Dave, and more amazingly it's actually pretty popular despite being mostly reruns) and Science Club on BBC Two.