Actor Danny DeVito, in Pittsburgh scouting locations for a movie he is directing, was mistaken by a fan for fellow actor Arnold Schwarzenegger. "Weren't you in `Total Recall?' " the fan asked, referring to the latest film by Schwarzenegger. "No, no, no, that's my brother," DeVito replied. The actors co-starred in the movie "Twins," which told the story of twin brothers separated at birth.