Since there is a Japanese band every year, i think X Japan must be there in '09. They broke up like 8-9 years ago, but reunited a little while ago. Without X Japan there was no Dir en Grey, Mucc, Girugamesh, etc, and they were also featured in "A Headbangers Journey". Their first 3 reunion concerts for 50.000 people each all sold out on the first day, so they would probably do a lot better then Giru, Mucc and Dir en grey together. In my oppinion the best choice for a Japanese band for 20th ann. wacken!