Agree with Skykid, the movie is just right, and those POV shots!

Two things I didn't like were how you could spot the murderer a mile away, and that strange final scene with the lizard. I thought she was going to do the opposite of what she did, actually.
The Bird with the Crystal Plumage (1970)
More of a murder mystery than giallo, but very enjoyable to watch. The scene with the double doors in the museum is great, and seeing it being repeated in Sam's head was a nice touch. Quite a debut for Dario Argento.