I found this song really startling and disturbing (in a good way) when I first heard it, and thought it'd work for some complex lyric-sync.
The story: In case you don't feel like figuring it out yourself (why not? That's the best part! Stop! Don't read this!), here's the premise. The vid centers on Tetsu and Suzu, who play the roles of children who are tempted to kill their evil father. One wants it more than anything, but conscience plagues him. The other can commit murder without guilt, but deep down he loves his father. So they are both torn.