Natalie Portman won't do Alfonso Cuaron's Gravity after all. Plus…

Like Angelina Jolie before her, Natalie Portman passes on Cuaron's astronaut epic...but another star's in the running. Vincenzo Natali knows how he wants to depict Neuromancer's cyberspace. Idris Elba's taking on another Marvel role. Wallace Shawn joins Eureka. Spoilers alive! » 10/07/10 6:00am 10/07/10 6:00am