Yeah I definately know what you mean with the rock music, some of it just doesn't go and ends up putting you off your stride. I do have a few other rock tracks on my playlist though, I'm a massive Queens of the Stoneage fan and most of their songs work really well....I think sick, sick, sick is a good one, but I love em all. Other than that I've got some Kyuss, Black keys, Primal Scream (Miss Lucifer and Swastika Eyes are good ones), Beastie Boys and some random 80's rap hehe (along with all of the fluke, prodigy, FSOL, Chem Bros etc). Some rock music really does fit well...as does a bit of Bowie...Lets dance!