Matt Damon has been signed to star in Hereafter, a supernatural thriller to be directed by Clint Eastwood.
Although production company Warner Bros isn't giving much away about the plot, the film is described as having a Sixth Sense vibe. Peter Morgan, who received an Oscar nomination for Frost/Nixon, has written the script, with Kathleen Kennedy producing and Steven Spielberg and Frank Marshall executive producing.
Eastwood isn't a director, or indeed actor, normally associated with SF and fantasy, but he has been known to dabble in the past. He directed Space Cowboys, and also the Western High Plains Drifter which had a hint of the supernatural about it. As an actor he can also add Firefox ("Think in Russian!")