Chloe Sevigny / the Brown Bunny 2003
Chloë Sevigny claimed in interviews that the fellatio scene was not simulated
The oral sex scene was filmed using remote cameras with only Vincent Gallo and Chloë Sevigny in the room.
On 31 July 2004, a billboard of the film was put up on Sunset Boulevard in Los Angeles. It depicted the infamous fellatio scene, cut off and blurred. Because of limited (but vocal) community outcry, the billboard was taken down on 5 August. <imdb>
Brown Bunny - Chloe Sevigny