Conversation so far:
What did Jackie Gleason do before films?
Jackie Gleason worked his way up to a job at New York's Club 18, where insulting its patrons was the order of the day.
What got Jackie Gleason discovered?
Jackie Gleason greeted noted skater Sonja Henie by handing her an ice cube and saying, Okay, now do something.“

Question: Who discovered him?
Self-contained rewrite: Who discovered Jackie Gleason?