Polysics

This has to be the first band I post about. POLYSICS are quite possibly my favorite J-Rock band of all time. Taking influence from Devo, POLYSICS create something like Devo but insane.
Energetic stage shows, and catchy songs that you can dance to, you can't go wrong with POLYSICS.

Wiki:
Polysics (ポリシックス, typeset POLYSICS) is a Japanese new wave and rock band from Tokyo, who dubs its unique style as "technicolor pogo punk". It was named after a brand of synthesizer, the Korg Polysix. The band started in 1997, but got their big break in 1998 at a concert in Tokyo. They create high energy music, fusing conventional guitar music, with synthesized and computer generated sound to create a unique mixture of punk and synthpop, heavily inspired by the American bands Devo and The Tubes, and Japanese bands such as P-Model and Yellow Magic Orchestra. Their song lyrics often consist of Japanese, English, or just plain gibberish. The band has been noted for their extremely energetic live performances and their wild gimmicky outfits, notably their trademark orange boiler suits, with a simple "P" stamped on them, and their straight-bar sunglasses.

This was the first POLYSICS song I ever heard.