Sony's held a panel at Comic Con 2012 with the film's main cast and presented a sneak preview of their upcoming movie "Total Recall."Farrell was on the stage, along with film director Len Wiseman and actors Bryan Cranston, Jessica Biel, and Kate Beckinsale, who is also Wiseman's wife. When Farrell was asked the biggest difference between the original, a 1990 classic starring Arnold Schwarzenegger and the remake he stars in, he answered: "The biggest difference with this incarn...