Stephen Merchant says his voice work for Portal 2 is one of the most tiring things he's ever done, in talking to FMV Magazine about his role as Wheatley in Valve' platformer sequel. "It seemed like a fun thing to do, but in actual fact it was one of the most tiring things I’ve ever done,” the comedian, who has obviously never worked in construction, told the magazine. "I was standing in a recording booth shouting down imaginary corridors and falling out of make-believe ceilings. For hours at a time. And I really wanted to do a good job so I was shouting and screaming and leaping about. The thought of doing it again seems so daunting I’m not sure I can face it." Thanks CVG.