Four Brothers: How do you follow a film like Four Brothers? Well, you apparently add another brother. Paramount is currently developing Five Brothers, a sequel to the 2005 entry. Details of the film are not known, but Mark Wahlberg has already expressed interest in returning.

Paranormal Activity: A former Saw director will have his named attached to a different horror release this Halloween season. Kevin Greutert has been chosen to helm Paranormal Activity 2 (working title), which will debut this October. Neither a plot nor a budget has been announced.

Spider-Man: Sequel, prequel, reboot—whatever you want to call it, Marc Webb will be directing it. The man behind (500) Days of Summer has just been tapped for Columbia’s next Spider-Man film. Webb also has options for two other chapters as well.

Avatar: Was there ever any doubt? It’s been confirmed that Sam Worthington signed on for another Avatar installment, even before the first film dominated the world. Actor Stephen Lang (Colonel Miles Quaritch) even jokes (?) that he could be back as well. “You think those two arrows in my chest are going to stop me from coming back?” Lang told Entertainment Weekly. “Nothing’s over so long as they’ve got my DNA.”

Jurassic Park: While promoting his upcoming film The Wolfman, Joe Johnston dropped details on another project. The Jurassic Park III director said there will be a Jurassic Park IV. And, if it’s successful, the film - which “breaks away from the first three” - may be the start of a new trilogy. No start date was revealed by Johnston.

Ghostbusters: Although he directed for the first two films, and was helping to produce the third film, Ivan Reitman only recently agreed to helm Ghostbusters III. Ivan, father to Up in the Air‘s Jason Reitman, said he hopes “to start shooting it this next year.”