When an actor has made as many bad movies as Eddie Murphy, you can forgive them for forgetting that one or two of them existed. Unfortunately, they do exist, regardless of how hard he wants them to disappear from his memory. Norbit is one of them, and it’s absolutely awful. And yet, Murphy would disagree, even though the conspiracy theory suggests, and not without merit, that the film was so bad it torpedoed his chances of winning the Academy Aw…