Stephen James Merchant (born 24 November 1974) is an English writer, director, radio presenter, comedian, and actor. Merchant is best known for his collaborations with Ricky Gervais and Karl Pilkington, as the co-writer and co-director of the popular British sitcom The Office (2001–2003), co-writer and co-star of Extras (2005–2007) and co-host of The Ricky Gervais Show in its radio, podcast, audiobook and television formats; the radio version won a bronze Sony Award. He is also known for his voice role as Wheatley in the 2011 video game Portal 2.