I can think of nothing that I would want to see Hollywood remake.

WRT The Birds, I can explain it -- imagine someone trying to "pitch" this -- without the Hitchcock slant -- the executives would go, "so let me get this straight, you never figure out why the birds do what they do?" "Yes, that's right. It would just end with the main characters walking very tensely through a crowd of birds that inexplicably don't attack them..." (pause) "Alrighty, then, don't call us, we'll call you. Okaythanksbuhbye."