Only the very young and the very undiscriminating will find this movie enchanting -- or even mildly entertaining. Obviously, Jackie Chan isn't immune to making one for the paycheck and phoning in his performance.
No, Ong-Bak 2 isn't a great movie and, no, Tony Jaa isn't a great actor. But so what? If you love the pure kinetics of a well-shot martial-arts film, Tony Jaa is the most exciting figure to come along in years.