I listen to a lot of Kpop and Vocaloid, so lemme think about this for a minute... Don't have much time, unfortunately. XD
In the category of Kpop, I really like Bang! by After School. ;; Especially the Japanese version.
http://youtu.be/piR1Au5czs8
I also really like Dere-ization Phenomenon 100% by Lamaze-P (I think that's the name??) ft. Miku V3. <3 Still gets me all energized.