There are many good suggestions that I agree with. Just a few others that come to mind are
Gunsmoke (before Dennis Weaver left the cast)
Poirot (Mystery! on PBS)
Prime Suspect
Brideshead Revisited
Upstairs Downstairs
The Carol Burnett Show
Your Show of Shows
Gunsmoke (before Dennis Weaver left the cast)
Poirot (Mystery! on PBS)
Prime Suspect
Brideshead Revisited
Upstairs Downstairs
The Carol Burnett Show
Your Show of Shows