They’ve traveled for charity, for work, for family and often for fun — so is it any wonder that celebrity vagabonds Angelina Jolie and Brad Pitt are the stars that world travelers would most like to run into on vacation? Tripadvisor.com surveyed 2,400 visitors to its travel web site who replied that meeting Brangelina on a trip would be a dream come true. Will Smith and Jada Pinkett Smith were respondents’ second-favorite couple to run into abroad, followed by Ben Affleck and Jennifer Garner, Michael Douglas and Catherine Zeta-Jones and Britain’s David and Victoria Beckham. But most tripadvisor.com visitors would rather gawk at instead of talk to their favorite stars. Only 22 percent said they would approach an A-list celebrity on vacation to say hello or to ask for an autograph.