“All the world’s a stage, and all the men and women merely players,” said Bill Shakespeare. Meaning perhaps, in an updated sense, that we are all stars in our own movies. If Charlie Kaufman’s directorial debut, a dense series of reflections on art and death, were a novel, it would be called “unfilmable.” Intellectuals (a category that really doesn’t include me) looking for a challenge may want to see it, as Roger Ebert suggests, two or even three times. And they will be rewarded with insights into nothing less than The Human Condition. Regular moviegoers (a category that does include me), however, even those who have greatly enjoyed Kaufman’s screenwriting (Being John Malkovich, Adaptation, Eternal Sunshine of the Spotless Mind), may find it a relentlessly bleak, overstuffed and pretentious head trip, and have a hard time sitting through it once. Narrative coherence, character and logic are thrown out the window in favor of Deep Thoughts, and, well, it’s just not a lot of fun. Cast includes Philip Seymour Hoffman, Samantha Morton, Michelle Williams, Catherine Keener, Emily Watson and others. Kaufman is far and away the most creative writer working in the movies today. But he needs a director.