Man vs. Wild, also called Born Survivor: Bear Grylls, Ultimate Survival, Survival Game, or colloquially as simply Bear Grylls in the United Kingdom, is a survival television series hosted by Bear Grylls on the Discovery Channel. In the United Kingdom, the series was originally shown on Channel 4, but later series were broadcast on Discovery Channel UK. The series was produced by British television production company Diverse Bristol. The show was first broadcast on 10 November 2006 after airing a pilot episode titled "The Rockies" on 10 March 2006. In a special first aired on 2 June 2009, Will Ferrell joined Grylls on a survival trip to Northern Sweden. Grylls also said he has been approached about doing a Man vs. Wild urban disaster 3-D feature film, an idea he said he would "really like to do." Ben Stiller also signed on for an episode later in the year. Grylls signed on to showcase urban survival techniques in a new Discovery show called Worst-Case Scenario, which premiered on 5 May 2010 on the network. In March 2012, Discovery Channel terminated its contract with Grylls due to contract disputes, effectively cancelling the series.