Oscar frontrunner Nicole Kidman and Brad Pitt are in talks to star in the action-adventure Mr. and Mrs. Smith. The duo would play a bored married couple who discover they are enemy assassins hired to kill each other. Meanwhile, Kidman's ex, Tom Cruise, is in negotiations to star in and produce Columbia's upcoming remake of the 1942 comedy I Married a Witch. Danny DeVito is on board to direct the project, which is slated to begin production toward the end of the year.