OK, the Dirty Harry series is, admittedly, far more influenced by the other Italian crime genre, poliziotteschi. However, the villains, especially Scorpio from the first film, seem very giallo-esque to me.

As for Hot Fuzz, that's probably the least giallo film on the list, but the churchyard kill just screamed "giallo" to me.

And yes, I did mean giallo influence, since there is really no such thing as a non-Italian giallo. As for Psycho/Marnie/Mannequin in Red, I included those films as they, in my opinion, are influential enough to the giallo to warrant mention.

Add: Lust for Vengeance