This is the Japanese OP for Teenage Mutant Ninja Turtles (2003). The song is Jounetsu no Kaze (The Wind of Passion) by the Inazuma Sentai
Official TV Tokyo TMNT web page
nime/m_turtles/
EDIT: For those of you asking, NO this is not a Japanese show based on the Turtles, this is a dub of the 2003 revamp of the turtles, it's been out for quite a while.
*new news. sort of* It seems the Japanese didn't cotton too well to this series, as only 56 or so episodes were aired with at least 3 openings/endings! Sad.