There's a really good set of dvd's with Slavik and Karina that show how to deviate on latin dances with timing and expression, Innovation I think their series was called. They weren't cheap, but well worth it if you are advanced enough to use them. It isn't easy to dance syncopated timing. Certainly not for beginner dancers, but if you are experienced and can keep the rhythmn, it feels great to give it a go.