 The original script included an early scene where  Charles Boyer (I) (qv) talks to a cockroach in his room. Boyer  dismissed the scene as idiotic and convinced director  Mitchell Leisen (qv) to delete it; screenwriters  Billy Wilder (qv) and Charles Brackett (qv) were so incensed at  Leisen for giving in they resolved to direct and produce their own  movies from then on.