Conversation so far:
What were Fawlty Towers?
Fawlty Towers was a 1970s sitcom starring John Cleese as Basil Fawlty, a neurotic hotel manager.
When did John Cleese begin starring on Fawlty Towers?
Cleese played the role of Basil Fawlty from 1975 to 1979.

Question: Was it successful?
Self-contained rewrite: Was Fawlty Towers a successful show?