Keeping it in the family can be troublesome, as the Budweiser Busches or the Steinbrenner in-laws can attest, along with the Murdochs. Yet family ties can work out swimmingly as well—see the Godfather Coppolas, the Chicago Daleys, the Wal-Mart Waltons. And then there are the movie and TV careers of the descendants of Rin Tin Tin, four generations of stardom based on family connections. How egos and family rivalries played into that one, nobody can really say.