Anything from Slayer to Rodriguez (I love that guitar concerto), Sepultura to Architecture in Helsinki, Mudvayne to the Baggsmen, Butterfly Effect, COG, Chemical brothers, anything Kid Kenobe does, same goes for Q45, and others like them. Wolfmother are great although I wanted to not like them. I'm loving Pendulum too, go the Aussie drum and bass.
RNB sucks arse and so does anything too poppy, light and fluffy.