The new Jerry Bruckheimer comedy Kangaroo Jack has successfully tapped into America's longstanding love affair with rapping kangaroos, taking in a box-office-best $17.7 million in its opening weekend. 'From Krazy Legs Kangol in the early '80s to such New School acts as Pouch Gangstas and Tha Mar$upials, kangaroos have always been at the forefront of the rap scene,' media analyst Glen Coffey said. 'But not until now has anyone had the vision to exploit this trend in a full-length feature film.' Warner Bros. has already confirmed plans for a sequel, Koala Bob, featuring a computer-generated beat-boxing koala who steals $50 million in gold bullion... and he's not giving it back. 