Here’s a little known fact: Did you ever notice that easygoing Brokeback Mountain stud Heath Ledger – who seems so perfect- has a speech impediment? That’s right. When the Oscar nominated Aussie actor is under pressure he starts to stutter. If he’s excited or nervous it becomes even more noticeable. He’s learned to cope with it. People who’ve worked with him say that while he’s filming movies, he often has to repeat his lines over and over until they ‘re delivered without a hitch.