Marking his debut as a quiz show host, Sheen will preside over 100 episodes due to be broadcast later this year. Sheen said: "Quite literally very large shoes to fill but as a huge fan of the show I'm incredibly excited to be able to move into the House and at long last see my silhouette on a fondue set. " Caroline O'Neill, BBC commissioning executive, said: "We're delighted to have Michael Sheen stepping into the House of Games. "His charisma and passion for playfulness will be a joy for audiences and we've no doubt he'll relish throwing himself into a fiercely fought Answer Smash. " Earlier this year it was announced that Sheen is also set to present a BBC investigation series into chemical contamination in Wales. Based on the Radio 4 podcast of the same name, Buried will see the Port Talbot star explore claims of chemical contamination in south Wales, close to where he grew up.