Bareback Mountain

Ang Lee's epic gay shepherd (not gay cowboy) film that unexpectedly lost out on Best Film at the 2005 Oscars to Crash (the Sandra Bullock one). During the Box Office Top 10 countdown, Simon accidentally read out the name Brokeback Mountain as "Bareback Mountain" - which, given the film's subject matter, went on to become a running gag far beyond Wittertainment.