Sorry for writing in English, but unfortunately I don't speak Italian.
Here you can find pictures from all five roles that Jess played side by side with his father. It's interesting that the team from movieplayer.it obviously stole the picture of his role in Doc West from our database.
Click:
Jess Hill in the Spencer/Hill-database
And here a picture from the Donatello-Award 2010 ceremony. Jess was sitting in the audience next to Terence:
(First row from left: Jess, Terence, Ermanno Olmi, Olmi's companion, Bud Spencer, Buds son Giuseppe, ...)
The second pictures shows Jess clapping his hands when Terence and Bud were on stage:
