There's a documentary about slime mold! The Creeping Garden (2014), by Tim Grabham and Jasper Sharp. It screened two years ago at the Brattle and I missed it. I didn't even know. It's plasmodial slime molds, not cellular, but that's okay. I'll still watch it. Fortunately, there appears to be a Blu-Ray/DVD. I'm so happy. It had better include the time a slime mold modeled the railway system of Tokyo.