REAL! Rock N roll, aka AC/DC, Led Zeppelin, etc...
Not that new-age metal and "rock" that people call rock n roll, I'm sorry but that is not real rock n roll
http://www.youtube.com/watch?v=a5BjIVS04jk
http://www.youtube.com/watch?v=Bomv-6CJSfM
http://www.youtube.com/watch?v=zvoeeq-BH4w
THIS is real rock n roll
Also I really like Japanese music, specially Vocaloid , should be a genre by itself really, its that awesome