Jump-cut proficient director Tony Scott has signed on to helm Unstoppable, a thriller about a runaway train that's full of dangerous radioactive goop. The engineer (Denzel? Will?) and the conductor (Dakota Fanning?) find themselves in a "race against time" to stop the goop from gooping out all over everybody. Everyone else is villains. [Variety] On-set freakout proficient director David O. Russell has signed up for The Silver Linings Playbook, based on the novel about a sadsack high school teacher who goes to live with his mom after being released from the nut house. [Variety]