The Departed (2006)

The Departed is Martin Scorsese's Oscar-winning crime thriller about undercover loyalties and betrayal inside the Boston underworld, a film built on tension rather than skin. Still, it delivers one sex scene worth cataloging, with Leonardo DiCaprio at the center of the film's lone steamy encounter. It's a brief detour from the double-crossing, but fans of DiCaprio will want the clip all the same.