Okay, here's the part you won't believe: Going to this movie was Judy's idea. I don't think she knew what she was in for. What it is, is a movie about a guy who's writing a movie. Some of the scenes in the movie we're watching are scenes from his movie. Some are scenes from his life. Sometimes the two seem to overlap a bit.
Oh, and it's also about a pair of dognappers, a gangster who really loves his little doggie, a psychopath who shows up in answer to a "psychopath wanted" ad, a serial killer called The Jack of Diamonds, and a few other things I'm probably forgetting. You can see the cast list on the poster to the left. That might sell you right there.
Let me add that the movie is very funny, incredibly violent, and even more meta than I've made it sound. I think I can safely guarantee that it's not like anything else you're going to find in your local cineplex this month. Or ever. Check it out.