Sigourney Weaver is in talks to join the thriller Vantage Point as a TV producer chasing the assassination story, it's already gaining a big cast and the thriller itself promises a good storyline.
The movie is portraying the attempted assassination of the President (Bush?) from five different viewpoints. You would expect that each viewpoint would reveal new details about the assassination, and perhaps even turn the whole thing on its head after leading you the wrong route.
The cast list is growing with Matthew Fox, William Hurt (as the President), Dennis Quaid and Forest Whitaker all confirmed. This is looking really good.