I thought Christopher Lee was a good actor. Of course I remember him mostly for the Dracula movies and as Scaramanga from
The Man With the Golden Gun. The last movie I saw him in was called
Goliath Awaits made in 1981, about the survivors of a
Titanic-like ocean liner sunk in WW2 where they were found 40 years later living inside the wreck at the bottom of the sea and they somehow generated a breathable atmosphere, grew crops for food, etc.
https://www.imdb.com/title/tt0082461/