Humphrey Bogart in a cast list at the trailer's end. Robinson's role is evocative of Duke Mantee in "The Petrified Forest" (1936), a Bogart leading man breakthrough the studio had originally earmarked for Robinson. The enormous success of "Casablanca" redefined Bogart's career. For the first time, Bogart could be cast successfully as both a tough, strong man and vulnerable love interest. Despite his elevated standing, he did not yet have a contractual right of script refusal. When he got weak scripts he simply dug in his heels and locked horns again with the front office, as he did on the film "Conflict"
Humphrey Bogart top 100 quotations in American cinema, the most by any actor: Bogart is also credited with one of the top movie misquotations, "Play it again, Sam". In "Casablanca", neither his Rick Blaine character nor anyone else says the line, although it is widely credited to him and is the verbatim title of a Woody Allen tribute movie. Roger Moore says "Play it again Sam" in Moonraker, just after killing Chang in Venice. When Blaine's former love, Ilsa (Ingrid Bergman), first enters his "Café Americain", she spots Sam, the piano player (Dooley Wilson), and asks him to "Play it once, Sam,