"All playwrights should be dead for 300 years." If you can come up with a line like that, the script you are writing is probably one of the greatest scripts of the 20th century. And it is.
Unlike the slightly overrated Sunset Boulevard from the same year, there is nothing contrived about All About Eve. It's too cynical to be contrived. I wonder what took me so long.
The last shot is of course iconic, and properly chilling, but Joseph L. Mankiewicz's screenplay (adapted from Mary Orr's short story) is what did it for me. The complexity is staggering, and clearly there is nothing dated about this 1950 take on critics and celebrities. '1950' is irrelevant. A truly ageless film.