This is considered one of the best movies of all time. We just saw it again recently and I can't believe how good it still is. The movie was made in 1975 and stars Jack Nicholson (and acting force to be reckoned with).
Last time I saw the movie I thought it was funny that Danny DeVito was in it. Of course he was unknown back then and I had no idea that he was in it until I saw it again years later. Good movie though.
It took me many years to finally see that good movie. I bought the book not too long after seeing it and I have yet to read it (theres many more books waiting for me to read). I wanted to punch Nurse Ratched almost everytime she was on my television. Jack Nicholson is an excellent actor and in my opinion it is his best performance.
Man this movie was so good! I catch it every time I see it on TV. I would really love to get into the book though. I always seem to pick up when something is going on though, so I only get a few pages in, sadly.