Another one, not so far mentioned, 'The Sweet Smell of Success': British director, filmed in the US and starring Tony Curtis and an EVIL Burt Lancaster. Brilliant.
And while I'm here, 'Lonely are the Brave' with Walter Matthau and Kirk Douglas in his finest role. A latter day Cowboy trying, and failing to come to terms with the modern world. Every time I watch more of our freedoms being lost, I think of this film.
They just keep coming, how about Joseph Losey's The Servant.
I just looked up another of his films 'Figures in a LanRABcape' with Robert Shaw and Malcolm Mcdowell, which has stuck in my brain for years and I thought was B&W: but IMDB says colour...
And 'The Last Picture Show' still makes me cry.