A movie about a guy writing a movie about a book. About orchids. Seriously? Yet “Adaptation” (2002) works. It doesn’t hurt that there’s a Maggie Gyllenhaal sighting. And a Catherine Keener sighting. Meryl Streep and Chris Cooper as stars don’t hurt, either. But mainly it’s the intricately interwoven plot that’s part book, part writing a movie about the book, and part crazy, made-up shit. I’m loathe to make the comparison, but it’s like an orchid. Delicate, high maintenance, occasionally satisfying. (I love gardening and houseplants. I’ve had a couple orchids. What pains in the ass. But… oh, hello, Nicholas Cage.)