Conversation so far:
What legacy did Cary Grant leave?
Biographers Morecambe and Stirling believe that Cary Grant was the greatest leading man Hollywood had ever known.
What else did directors say about Cary Grant's legacy?
David Thomson and directors Stanley Donen and Howard Hawks concurred that Cary Grant was the greatest and most important actor in the history of the cinema

Question: What was his first big film
Self-contained rewrite: What was Cary Grant's first big film?