Do couples that act together stay together? Tom Cruise and Nicole Kidman are said to be in talks to star in a London and Broadway stage revival of “Cat on a Hot Tin Roof.” News reports speculate that Oscar winner Sam Mendes (“American Beauty”), who directed Kidman in London and Broadway productions of “The Blue Room,” has approached the couple about signing to the play. The couple’s last professional collaboration was Stanley Kubrick’s “Eyes Wide Shut.” Of that movie’s lukewarm reception, Cruise tells this month’s Vanity Fair, “Well, I think they expected some big sex movie.”