Sigourney Weaver In For 4 Avatars

James Cameron recently said he is Avatar-bound and Sigourney Weaver said she will appear in what will be Avatar 2, 3, 4, confirming that the Titanic director is still on track with the franchise, which made over $2 billion worldwide in its first mammoth installment, which debuted back in December, 2009.

Production will apparently begin on the back to back installments this fall, Weaver told Showbiz 411. The actress has stints in USA Networks' Political Animals followed by a short-run play at New York's Lincoln Center and then dives in on Avatar 2 - 4 with Cameron. Weaver noted that she does not know the time frame for the sequels to the 3-D behemoth, "I just show up."

James Cameron made headlines in March for reaching the furthest depth of the ocean, the Mariana Trench, which is nearly seven miles below the surface of the Pacific near Guam. "I’ve divided my time over the last 16 years over deep ocean exploration and filmmaking. I’ve made two movies in 16 years, and I’ve done eight expeditions," he told The New York Times in May.

He also noted that he had closed his production company and is devoting the movie-side of his career to Avatar exclusively. "I’m not interested in developing anything. I’m in the “Avatar” business. Period. That’s it. I’m making Avatar 2, Avatar 3, maybe Avatar 4, and I’m not going to produce other people’s movies for them. I’m not interested in taking scripts."

He did note, however, he will also do documentaries about his deep-sea exploration, the first of which should be out next year.