Get Carter (1971)
Michael Caine has had all of his classic movies remade in Hollywood over the last few years - Alfie (1966) and The Italian Job (1969) might also make this list - and this one was made into a mediocre but passable Stallone vehicle a dozen years ago.
Forget the 2000 "remake", this is a bleak, amoral tale that didn't do great business as the backers weren't sure how to market it. An embittered hitman returns to his home town for revenge of his brother's death. I won't say anymore as it'll spoil the plot, but it's well worth a look. Cunts.