A great film that marked the Groin, One flew over the cuckoo's nest, with the incomparable Jack Nickolson in the role of Mac Murphy. The original novel is a written by Ken Kensey. He was a friend of the band of Jack Kerouac, Alan Ginsberg and William Burroughs, in short, a merry fellow of a beatnik…
In the film, Mc Murphy pretends to be fada in order to escape prison and ends up in the asylum. Touched in the Groin by his band of colleagues and by the treatment inflicted on them, he mounts a small mischievous front, after a few good laughs, breakaways and even a part of his legs in the air, Mc Murphy ends up being lobotomized.
There is another very strong character in this film, it is the chief, a colossus (a little like Joe the Indian of Tom Sawyer) Do you remember him?
As for the credit for the original poster, it seems to be the work of the poster duo Guy Joineau & Guy Bourduge.