jerry is right about djent. it is a tone shaping technique. there are a ton of bands that use it now and there has been a sub-genre of prog-metal created that people refer to as "djent". meshugga was one of the pioneers. periphery, tesseract, and fellsilent are all bands that helped to propogate the style. there seems to be an overwhelming amount of bands using this style nowadays. i dig it and it actually takes a good amount of talent to play, so more power to em.