Katie Holmes caused some serious chaos when she showed up on the set of Mission Impossible: III, which is filming in Xitang, in the Zhejiang province to see beau Tom Cruise. Cruise and Holmes were reportedly mobbed by Chinese fans eager for autographs and pictures with the couple. Hey, Cruise should've brought his sonogram machine -- he could have sold pics of fans standing next to a picture of his baby! Talk about the ultimate Cruise collector's item. You know what's really sad? I bet people would have lined up for hours for that action.