Conversation so far:
What is Grant's most famous movies?
greatest leading man Hollywood had ever known".
What was he famous for?
very few stars who achieve the magnitude of Cary Grant.
did he have any leading ladies?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Hitchcock, who admired him and called him "the only actor I ever loved in my whole life".

Question: Was he famous for anything other than acting?
Self-contained rewrite: Was Grant famous for anything other than acting?