Mia moglie è una bestia(1988)

Overview:

Gianni (Boldi) is an ad agent from Milan vacationing in the mountains. Inside a cave he stumbles upon a cavewoman (Grimaldi) frozen intact. Of course she retained all of her young beauty and immediately Gianni is attracted to her, but after he begins thinking she is best left behind she follows him around creating havoc in his normal life. Gianni believes he can transform her into a beautiful modern day woman.