To dream that you are watching a movie represents an experience you are having in life. The movie or tv show itself a symbol for what you are experiencing. Consider what the movie makes you feel or think and how it parallels situations in your waking life. Think about what the characters or storylines mean to you as symbols for your own thoughts, feelings, and behaviors.
To dream of filming a Hollywood movie represents a situation that is developing that you know others will take a serious interest in. Others having or wanting to notice what you've done. Others going out of their way to experience something you're responsible for making happen.
Example: A young man dreamed of filming a Hollywood movie. In waking his computer was failing and he had to do everything he could to fix it before asking his parents for a new one so he'd ensure they felt he needed a new computer. The Hollywood movie reflected the young man remembering all that he had done to fix his computer before communicating the seriousness of his problem to his parents who he knew would feel compelled to act.