Ninja Assassin (2009)
A young ninja turns his back on the orphanage that raised him, leading to a confrontation with a fellow ninja from the clan.
Sho Kosugi as the villain, lots of goofy ninja shadow powers, and a Korean pop singer/dancer who's supposed to be the tough guy hero (a more handsome version of the guy who did Gagnam Style)... how could this fail?
This disappointed me...this would be good if it were riffed
Satellite of Love commented
Oooh yeah, I've been meaning to suggest this. I think this would be a decent riff.