Not only do I like the film Bobby, it is one of my favorite pieces of cinema, ever. I have seen it almost 100 times at this point, and it just keeps getting better.
SPOILERS
The film deals with a psychotic break by a struggling actress, a break we get to experience with her. That is basically what the film is ABOUT, but, Mulholland Drive, for me, contains so much more. First and Foremost, the film affects you, on a deep level, beyond waking comprehension. The film moves me, haunts me, tortures and elates me. I am Mulholland Drive's bitch, big time.
The film is also about Hollywood, duality, percieved/actual reality, dreams, broken dreams, stardom, studios and what goes on beyond closed doors in said studios.
I am at work, and just don;t hhave the time to get into this now, as I tewnd to spend hours researching and chatting about this film once I get going.
Check this out:
The Modern Word
This site is a book site, strictly, but they took it upon themselves to review and study Mulholland Drive, as they feel it is such a masterful work, that they consider it high literature, along the lines of Finnegan's Wake. If you are looking for interpretations, this place has a ton. I agree with some, disagree with others, but it's a fun way to spend a little time delving into the film...