Plenty of films have been alleged to synchronise with music, the most famous (and falsest) or which is Pink Floyd's 'Dark Side of the Moon' and The Wizard of Oz. However, a few years ago, Youtube user clayfranklin uploaded a rare example of an accidental synch up that is as near to perfect as you're likely to find: the unlikely pairing of the English Industrial band, Godflesh track 'Anthem' and the musical Jesus Christ Superstar.
"I've worked in a video store for 2 years. After awhile I got bored of watching movies with their intended soundtrack. I noticed that Godflesh and Jesus Christ Superstar surpassed the occasional synch-up."
The whole video is quite consistently synched up, but to skip ahead to where things get spooky, go straight to 3.13 in. Enjoy!