Conversation so far:
What was the first film that Rex Harrison starred in?
Rex Harrison's film debut was in The Great Game in 1930.
Was Rex Harrison's first film, The Great Game considered to be a success?
Did Rex Harrison's first film, The Great Game do well with critics?
Did Rex Harrison act in any other films besides The Great Game?
Other early films include The Citadel, Night Train to Munich, Major Barbara, Blithe Spirit, Anna and the King of Siam, The Ghost and Mrs. Muir, and The Foxes of Harrow.

Question: Who did he act with?
Self-contained rewrite: Who did Rex Harrison act with?