The youngest primetime program host in the history of Australian TV, Cameron Daddo has cracked the US market in the 1990s, first as Brian Petersen, the photographer who could not keep his pants zipped, in "Models, Inc." (Fox, 1994-95) and later as special effects expert Rollie Tyler in the syndicated "FX: The Series" (1996-98).Daddo broke into show business in his late teens, appearing as Huck Finn in the Australian production of the Tony-winning musical "Big River". As a member of the cast of the kids series "Off the Dish", he immediately became a popular small screen personality and soon was