The movie is a bit dated, the plot, especially their relationship is a bit weird (perhaps also dated, I just didn't understand what it was supposed to mean).
Also, both Gene Hackman and Gene Wilder co-star, but are a bit miscast.
But the final scene is epic, and a big inspiration for the Tarantino's et all of today.
very nice movie, both suspenseful and funny at times. Great cast as well
and not so dated as the above.
imdb quotes it as "the best Hitchcock film Hitchcock never made."